Terms of Service

Important — Read Carefully

These Terms of Service ("Terms") form a legally binding contract between you ("you", "your", "User") and Zhang Jie ("QuickSend", "we", "us", "our"), the operator of the QuickSend cross-device content transfer application and related services (the "App" or the "Service").

BY CREATING AN ACCOUNT, ACCESSING, OR USING THE SERVICE, YOU EXPRESSLY AGREE TO BE BOUND BY THESE TERMS AND OUR PRIVACY POLICY. IF YOU DO NOT AGREE, DO NOT INSTALL, ACCESS, OR USE THE SERVICE.

These Terms include important provisions affecting your legal rights, including: a limitation of QuickSend's liability (Section 13), an indemnification obligation (Section 14), the law that governs disputes (Section 17), a binding arbitration agreement and class-action waiver (Section 18), and a disclosure that this document was drafted with AI assistance and has not been individually reviewed by counsel (Section 24). Please read these Sections carefully.

1. Eligibility

You must be at least thirteen (13) years of age, or such higher minimum age required by the laws of your country or region (sixteen (16) in certain European Economic Area member states), to use the Service. If you are below the age of legal majority where you reside, you represent and warrant that you have obtained the consent of your parent or legal guardian to enter into these Terms.

You may not use the Service if (i) you are barred from doing so under applicable law; (ii) you are located in, ordinarily resident in, or a national of any country subject to a comprehensive U.S. government embargo (currently including Cuba, Iran, North Korea, Syria, and the Crimea, Donetsk, and Luhansk regions of Ukraine); (iii) you are listed on any U.S., EU, UK, or UN list of restricted parties; or (iv) you have previously been suspended or removed from the Service.

You must not use the Service on behalf of, or for the benefit of, any party described in (ii)–(iv) above.

2. The Service

QuickSend is a cross-device content transfer tool that lets you connect your own devices and send text, links, files, and other content between them. The Service is provided on a freemium basis: a free tier with limited features, and paid subscription tiers ("Pro", "Max", "Ultra", or such other names as we may introduce) that unlock higher limits and additional capabilities.

Specific features, quotas, prices, and supported regions are described inside the App and on our website (when published) and may be changed, suspended, or discontinued by us at any time, with reasonable notice where required by law.

The Service is provided as a personal-use tool for transfers among your own devices and devices that you have voluntarily paired with. Commercial, enterprise, government, or large-scale automated use requires our prior written consent and a separate written agreement; absent such agreement, such use is not permitted under these Terms.

The Service is NOT intended for: (i) emergency communication; (ii) medical, legal, or financial advice; (iii) transmission of classified, regulated, or critical infrastructure data; (iv) primary backup of irreplaceable data. You are responsible for maintaining independent backups of important content.

3. Your Account

You sign in to the Service using an email address. You are solely responsible for: (i) keeping your email and devices secure; (ii) all activity that occurs under your account; (iii) promptly notifying us at legal@ddzu.net of any unauthorized access, breach, or misuse you become aware of.

You agree to provide accurate, current, and complete information when registering and to keep it updated. We may suspend or terminate accounts that we reasonably believe contain false, misleading, fraudulent, or sanctioned-party information.

You may delete your account from inside the App at any time. After deletion, we will anonymize or delete personal data associated with the account in accordance with our Privacy Policy, except for information we are required to retain by law (e.g., tax records, fraud-prevention logs, statutory record-keeping obligations).

You may register only one personal account. Creating multiple accounts to circumvent quotas, evade prior suspension, or otherwise abuse the Service is grounds for immediate termination.

4. Acceptable Use

You agree NOT to use the Service to: (a) violate any law, regulation, or third-party right; (b) transmit content that is unlawful, infringing, defamatory, obscene, harassing, threatening, hateful, or that depicts or exploits minors; (c) distribute malware, spyware, ransomware, viruses, worms, trojans, or any other harmful code; (d) infringe intellectual property, trade secret, privacy, or publicity rights of any person or entity; (e) attempt to bypass technical safeguards, rate limits, paywalls, encryption, watermarking, or access controls; (f) probe, scan, or test the vulnerability of any system or network without our prior written authorization; (g) reverse engineer, decompile, disassemble, or attempt to derive the source code of the App, except to the extent permitted by mandatory law (and only after notifying us); (h) interfere with or disrupt the integrity, performance, or availability of the Service; (i) impersonate any person or entity, or falsely state or misrepresent your affiliation with a person or entity; (j) collect, harvest, or scrape information about other users; (k) resell, sublicense, white-label, or otherwise commercialize the Service without our prior written consent; (l) use the Service to send unsolicited bulk communications ("spam"); (m) use the Service in violation of export-control, sanctions, anti-money-laundering, or anti-terrorism laws; (n) use the Service to facilitate any activity prohibited by the Apple App Store Review Guidelines or Google Play Developer Program Policies.

You are solely responsible for the content you transmit through the Service ("Your Content"). We do not pre-screen content. We reserve the right (without obligation) to remove, refuse to transmit, block, or report content that violates these Terms or that, in our sole discretion, may expose us, our users, or any third party to liability or harm.

For relayed content (i.e., content temporarily stored on our servers under Section 6 of the Privacy Policy), we may use automated tools to scan for known illegal material (e.g., child sexual abuse material via PhotoDNA hash matching once available, malware via standard antivirus engines). Detections may be reported to the National Center for Missing & Exploited Children ("NCMEC") or other competent authorities as required by law.

We may, in our sole discretion, suspend or terminate access for any account that we reasonably believe has violated this Section, with or without notice, and with no refund of any prepaid fees.

5. Reporting; Trust & Safety

To report content or behavior on the Service that you believe violates these Terms or applicable law, please email contact@ddzu.net with the following: (i) your name and contact email; (ii) a description of the violation and how it was carried out via the Service; (iii) device IDs, user emails, or content IDs of the parties involved (if known); (iv) a statement, made under penalty of perjury, that the information you have provided is accurate.

For copyright-specific notices, please follow Section 10 (DMCA Notice and Takedown Procedure) below.

For privacy-related complaints or rights requests, please email privacy@ddzu.net (see Privacy Policy Section 10).

We will acknowledge legitimate reports within seven (7) business days and act on them as we deem appropriate, including (without limitation) by issuing warnings, removing relayed content, suspending or terminating accounts, and reporting to law enforcement.

Repeat offenders will have their accounts permanently terminated. We maintain an internal record of enforcement actions for at least twelve (12) months.

6. Subscriptions, Payment, Cancellation, and Refunds

a) Billing platform — Paid tiers are billed through the payment processor associated with the platform on which you subscribed: Apple In-App Purchase (iOS / iPadOS / macOS App Store builds), Google Play Billing (Android), or our web payment processor (Paddle or equivalent, "Web") for direct Windows / macOS purchases. The price displayed at the point of purchase prevails, exclusive of any applicable taxes unless stated otherwise.

b) Auto-renewal — Subscriptions renew automatically at the end of each billing period (monthly, annually, or such other period as displayed at purchase) at the then-current price, unless cancelled before the renewal date. We will charge your payment method on file at each renewal.

c) How to cancel — (i) Apple: open the App Store app → tap your Apple ID → Subscriptions → QuickSend → Cancel; (ii) Google: open the Play Store app → tap your profile → Payments & subscriptions → Subscriptions → QuickSend → Cancel; (iii) Web: open the account portal on our website (link provided in your purchase receipt) and click Cancel. Cancellation takes effect at the end of the current billing period; you retain access to paid features until then.

d) Refunds (Apple / Google) — Refund decisions for Apple App Store and Google Play purchases are made by Apple or Google respectively under their own policies. QuickSend has no authority over those decisions and is not obligated to issue any refund for those purchases.

e) Refunds (Web) — For purchases made through our Web payment processor: (i) European Economic Area, UK, and Switzerland consumers exercising a statutory right of withdrawal within fourteen (14) days of the purchase date may receive a full refund, provided that the right of withdrawal is not lost due to your use of the paid features (the EU Consumer Rights Directive provides that the right of withdrawal lapses once you have fully consumed a digital service with your consent, and you expressly consent to such consumption upon purchase); (ii) outside that window or for non-EU/UK/CH consumers, refunds are at our reasonable discretion and may be denied where you have made substantial use of the paid features.

f) Refund process — To request a Web refund, email contact@ddzu.net within the applicable window with your purchase receipt. We will respond within ten (10) business days.

g) Price changes — We may change the prices, features, or quotas of a tier prospectively. We will give you at least thirty (30) days advance notice of material price increases via in-App notification or email; if you do not wish to accept the new price, you may cancel your subscription before the increase takes effect. Continued use after the effective date constitutes acceptance.

h) Taxes — You are responsible for any taxes, levies, duties, or similar governmental assessments applicable to your purchase under local law (other than taxes assessed on our net income).

i) Free trial / promotional offers — If we offer a free trial or promotional discount, the terms of that offer (duration, eligibility, conversion to paid) will be disclosed at the time of the offer. Unless cancelled before the trial ends, your subscription will automatically convert to a paid subscription at the then-current price.

j) Chargebacks — Initiating a chargeback or payment dispute without first contacting us to attempt resolution is a breach of these Terms and may result in account suspension and forfeiture of any prepaid balance.

7. License Grant; Ownership

Subject to your compliance with these Terms, we grant you a limited, personal, non-exclusive, non-transferable, non-sublicensable, revocable license to install and use the App on devices you own or control, solely for your personal use of the Service.

The Service, the App, all software, source code, designs, trademarks, logos, content (other than Your Content), and all intellectual property rights therein are and will remain the exclusive property of QuickSend and its licensors. No rights are granted to you other than those expressly stated in these Terms. All rights not expressly granted are reserved.

You retain all rights, title, and interest in Your Content. You grant QuickSend a limited, non-exclusive, royalty-free, worldwide, sublicensable (only to our service providers operating on our behalf) license to host, store, transmit, transcode, display, scan for malware and known illegal material, and otherwise process Your Content solely to the extent necessary to operate, secure, and improve the Service (including offline delivery, relay fallback, support, abuse prevention, and legal compliance). This license terminates when Your Content is deleted from our servers in accordance with our retention policy, except (i) backup copies may be retained on the schedule described in our Privacy Policy and (ii) anonymized or aggregated data derived from the operation of the Service may be retained indefinitely.

You represent and warrant that (i) you own or have all necessary rights, licenses, and permissions to upload and transmit Your Content; (ii) Your Content does not violate these Terms or any applicable law; and (iii) we may use Your Content as described in these Terms without payment of any compensation to any party.

8. Privacy

Our collection, use, and protection of your personal data is described in our Privacy Policy. By using the Service, you acknowledge that you have read and understood the Privacy Policy.

QuickSend encrypts all data in transit (HTTPS/TLS 1.3, WSS, WebRTC DTLS-SRTP, HTTPS for relay storage) and prefers peer-to-peer direct delivery so that, in the typical case, file payloads never reach our servers. For offline delivery or peer-to-peer failure on Pro+ tiers, payloads may be temporarily relayed via our servers.

IMPORTANT — QuickSend IS NOT an end-to-end encrypted service in the cryptographic sense. When content is relayed through our servers, we technically have the ability to read it, and we may do so for abuse prevention, customer support, legal compliance, and the other purposes described in our Privacy Policy. If end-to-end encryption is a requirement for your use case, please do not rely on QuickSend.

9. Third-Party Services

The Service may interoperate with or rely on third-party services (e.g., Apple, Google, payment processors, cloud storage, email delivery providers, IP geolocation databases, push-notification providers). Your use of those third-party services is governed by their own terms of service and privacy policies. We are not responsible for the acts, omissions, content, services, products, or pricing of any third party, and your dealings with third parties are at your own risk.

Open-source components used in the App are listed in the in-App "About" section. Each is licensed under its respective license.

10. DMCA Notice and Takedown Procedure

QuickSend respects the intellectual property rights of others and expects users to do the same. In accordance with the U.S. Digital Millennium Copyright Act of 1998 ("DMCA"), 17 U.S.C. § 512, we have adopted the following notice-and-takedown procedure.

a) Designated agent — Notifications of claimed copyright infringement should be sent to our designated DMCA agent: Zhang Jie, by email at legal@ddzu.net (physical address available upon valid written request). We may also register a Designated Agent with the U.S. Copyright Office; the canonical contact details will be published on our website when available.

b) Notice requirements — A valid DMCA notice must include all of the following (17 U.S.C. § 512(c)(3)): (i) a physical or electronic signature of the copyright owner or person authorized to act on the owner's behalf; (ii) identification of the copyrighted work claimed to have been infringed; (iii) identification of the material claimed to be infringing, with sufficient information to allow us to locate it (e.g., content ID, file SHA-256 hash, sender and recipient email if known); (iv) your contact information (name, address, phone, email); (v) a statement that you have a good-faith belief that the use is not authorized by the copyright owner, its agent, or the law; (vi) a statement, made under penalty of perjury, that the information in the notice is accurate and that you are authorized to act on behalf of the copyright owner.

c) Scope — DMCA takedown is only effective for content that is currently retained on our servers (i.e., content cached for offline delivery, relayed via our object storage, or stored in the audit summary). Peer-to-peer transfers do not leave content on our servers and are not subject to takedown by us; you should pursue the parties directly.

d) Counter-notification — If you believe that material you transmitted was removed in error, you may submit a counter-notification under 17 U.S.C. § 512(g)(3) including: (i) your physical or electronic signature; (ii) identification of the material and its prior location; (iii) a statement, under penalty of perjury, of good-faith belief that the material was removed by mistake or misidentification; (iv) your name, address, phone, and email, and a statement that you consent to the jurisdiction of the federal district court in [GOVERNING_LAW_FALLBACK_VENUE] (or any other jurisdiction in which we may be found), and that you will accept service of process from the original notifier or its agent.

e) Repeat-infringer policy — Accounts that are the subject of repeated valid DMCA notices will be terminated. We maintain an internal repeat-infringer log.

f) Misrepresentation liability — Any person who knowingly materially misrepresents that material is infringing, or was removed by mistake, may be liable for damages under 17 U.S.C. § 512(f).

11. EU Digital Services Act Compliance

To the extent the EU Digital Services Act (Regulation (EU) 2022/2065, "DSA") applies to the Service, the following additional provisions apply:

a) Single point of contact — For DSA-related communications from EU Member State authorities, the European Commission, and the Board for Digital Services, please contact legal@ddzu.net. The official languages of communication are English.

b) Single point of contact for users — Users in the European Union may contact us at contact@ddzu.net for any matter related to the Service. We respond in English; we make reasonable efforts to respond in the user's language where feasible.

c) Content moderation — Restrictions we may impose on Your Content (removal, demotion, suspension) are described in Section 4 of these Terms. Decisions are made by automated tools and human review; you may appeal an enforcement action by replying to the enforcement notice within thirty (30) days.

d) Transparency — We will publish an annual transparency report to the extent required by Article 15 of the DSA, including the number of orders received from Member State authorities, content-moderation actions, and resources allocated to content moderation.

e) Trusted flaggers — Notices of illegal content from entities granted "Trusted Flagger" status under Article 22 of the DSA will be processed with priority. Such notices should be sent to legal@ddzu.net and identify the Trusted Flagger's certificate of status.

f) Statement of reasons — Where we restrict the visibility of, demonetize, or suspend Your Content under these Terms, we will provide you with a clear and specific statement of reasons in accordance with Article 17 of the DSA, including (i) whether the action concerns specific items of content or your account as a whole; (ii) the facts and circumstances relied on; (iii) any automated means used; (iv) information on the redress mechanism available.

g) Internal complaint-handling — You may lodge a complaint about an enforcement decision by emailing legal@ddzu.net within six (6) months of receiving the statement of reasons. Complaints will be reviewed by a person not involved in the original decision and resolved within fourteen (14) days where reasonably possible.

h) Out-of-court dispute settlement — In addition to internal complaint-handling, EU users have the right to refer disputes to certified out-of-court dispute-settlement bodies in accordance with Article 21 of the DSA, at their own expense (we will reimburse reasonable costs only if the body finds in your favor).

12. Disclaimers

TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE", WITHOUT WARRANTIES OF ANY KIND, EXPRESS, IMPLIED, OR STATUTORY, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, ACCURACY, RELIABILITY, AVAILABILITY, TIMELINESS, SECURITY, OR ABSENCE OF VIRUSES OR ERRORS.

WITHOUT LIMITING THE FOREGOING, WE DO NOT WARRANT THAT (A) THE SERVICE WILL MEET YOUR REQUIREMENTS; (B) THE SERVICE WILL OPERATE WITHOUT INTERRUPTION OR ERROR; (C) ANY TRANSFER WILL SUCCEED, BE TIMELY, OR BE FREE OF DATA LOSS; (D) DEFECTS WILL BE CORRECTED; (E) ANY THIRD-PARTY CONTENT, SERVICES, OR PRODUCTS ACCESSIBLE THROUGH THE SERVICE WILL BE AVAILABLE OR ACCURATE. YOU ARE RESPONSIBLE FOR MAINTAINING INDEPENDENT BACKUPS OF YOUR IMPORTANT DATA.

WE EXPRESSLY DISCLAIM ANY WARRANTY THAT THE SERVICE CONSTITUTES, OR IS A SUBSTITUTE FOR, A LEGALLY COMPLIANT END-TO-END ENCRYPTED COMMUNICATION TOOL, A REGULATED FINANCIAL OR MEDICAL DATA PIPELINE, OR A CRITICAL-INFRASTRUCTURE COMMUNICATION SYSTEM.

SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OF CERTAIN IMPLIED WARRANTIES; IN SUCH JURISDICTIONS, OUR WARRANTY DISCLAIMERS APPLY TO THE GREATEST EXTENT PERMITTED BY LAW.

NOTHING IN THESE TERMS EXCLUDES OR LIMITS ANY LIABILITY THAT CANNOT BE EXCLUDED OR LIMITED UNDER MANDATORY LAW, INCLUDING LIABILITY FOR DEATH OR PERSONAL INJURY CAUSED BY OUR NEGLIGENCE, FRAUD OR FRAUDULENT MISREPRESENTATION, OR ANY OTHER LIABILITY THAT CANNOT BE EXCLUDED OR LIMITED UNDER APPLICABLE LAW.

13. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, IN NO EVENT WILL QUICKSEND, ITS AFFILIATES, OFFICERS, DIRECTORS, EMPLOYEES, AGENTS, OR LICENSORS BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES, OR FOR ANY LOSS OF PROFITS, REVENUE, DATA, GOODWILL, REPUTATION, OR BUSINESS, ARISING OUT OF OR RELATED TO THE SERVICE OR THESE TERMS, EVEN IF WE HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, AND REGARDLESS OF THE LEGAL THEORY (CONTRACT, TORT, STATUTORY, OR OTHERWISE) ON WHICH THE CLAIM IS BASED.

OUR TOTAL CUMULATIVE LIABILITY ARISING OUT OF OR RELATED TO THE SERVICE OR THESE TERMS SHALL NOT EXCEED THE GREATER OF (A) THE AMOUNT YOU ACTUALLY PAID US FOR THE SERVICE IN THE TWELVE (12) MONTHS IMMEDIATELY PRECEDING THE EVENT GIVING RISE TO THE CLAIM, OR (B) FIFTY US DOLLARS (USD $50). THIS LIMITATION APPLIES IN AGGREGATE TO ALL CLAIMS YOU MAY BRING.

SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OR LIMITATION OF CERTAIN DAMAGES (INCLUDING SEVERAL EU MEMBER STATES); IN SUCH JURISDICTIONS, OUR LIABILITY IS LIMITED TO THE GREATEST EXTENT PERMITTED BY LAW.

NOTHING IN THIS SECTION LIMITS LIABILITY THAT CANNOT BE LIMITED UNDER APPLICABLE LAW, INCLUDING (WITHOUT LIMITATION) LIABILITY FOR FRAUD OR FRAUDULENT MISREPRESENTATION, OR LIABILITY FOR DEATH OR PERSONAL INJURY CAUSED BY GROSS NEGLIGENCE.

14. Indemnification

You agree to defend, indemnify, and hold harmless QuickSend, its affiliates, officers, directors, employees, contractors, and agents, from and against any and all claims, liabilities, damages, judgments, awards, losses, costs, and expenses (including reasonable attorneys' fees) arising out of or related to: (a) your use or misuse of the Service; (b) your violation of these Terms; (c) Your Content; (d) your violation of any law, regulation, or third-party right (including any intellectual property, privacy, or publicity right); (e) any chargeback, payment dispute, or fraudulent transaction you initiate or cause.

We reserve the right to assume the exclusive defense and control of any matter otherwise subject to indemnification by you, in which case you agree to cooperate with us in the defense at your reasonable expense. You may not settle any matter without our prior written consent.

This indemnification obligation survives termination of these Terms and your use of the Service.

15. Termination

You may stop using the Service and delete your account at any time. We may suspend or terminate your access to all or part of the Service, with or without notice, at any time, including (without limitation) if (i) we reasonably believe you have violated these Terms; (ii) we are required to do so by law or legal process; (iii) you have not used your account for an extended period (we will give thirty (30) days notice before deleting inactive accounts); (iv) continued provision of the Service to you becomes commercially impracticable or technically infeasible; or (v) we discontinue the Service in whole or in a region.

Upon termination, your right to use the Service ceases immediately. We will refund the prorated unused portion of any prepaid subscription unless termination is due to your breach of these Terms or your violation of law, in which case no refund will be issued.

Sections that by their nature should survive termination (including ownership, license grant by you to us for Your Content, indemnification, disclaimers, limitation of liability, governing law, dispute resolution, and these survival provisions) will survive any termination.

16. Modifications

We may modify these Terms from time to time. If we make material changes, we will notify you by in-App notice or by email at least seven (7) days before the changes take effect, except where shorter notice is required by law, by a regulator, or to address an imminent security or legal risk.

Your continued use of the Service after the effective date constitutes acceptance of the modified Terms. If you do not agree to the modifications, you must stop using the Service and may delete your account. Modifications will not retroactively apply to claims or disputes that arose prior to the effective date.

The "Effective Date" at the top of these Terms reflects the latest revision.

17. Governing Law

These Terms and any dispute arising out of or related to them or the Service are governed by the laws of the Hong Kong Special Administrative Region of the People's Republic of China, without regard to its conflict-of-law principles. The United Nations Convention on Contracts for the International Sale of Goods (CISG) does not apply.

For users resident in the European Economic Area, the United Kingdom, or Switzerland, the mandatory consumer-protection laws of your country of residence will apply in addition to, or in place of, the laws of Hong Kong, to the extent required by those laws. For users resident in California, the protections of the California Consumer Privacy Act / California Privacy Rights Act apply as described in our Privacy Policy.

For users resident in the Mainland of the People's Republic of China, the Personal Information Protection Law and other mandatory consumer-protection rules of the People's Republic of China apply to the extent required.

18. Dispute Resolution; Arbitration; Class-Action Waiver

a) Informal resolution — Before commencing any formal proceeding, the parties shall first attempt to resolve any dispute, claim, or controversy arising out of or related to these Terms or the Service by good-faith negotiation. The complaining party shall send a written notice to legal@ddzu.net (or, for QuickSend, to the email you registered with) describing the dispute and requested relief. The parties shall negotiate in good faith for at least thirty (30) days.

b) Binding arbitration — If the dispute is not resolved within thirty (30) days after the notice, it shall be finally resolved by binding arbitration administered at the Hong Kong International Arbitration Centre (HKIAC) under the HKIAC Administered Arbitration Rules then in force. The arbitration shall be conducted by one arbitrator, in English, with the seat of arbitration in Hong Kong. Judgment on the award may be entered in any court of competent jurisdiction.

c) Class-action waiver — TO THE MAXIMUM EXTENT PERMITTED BY LAW, YOU AND QUICKSEND AGREE THAT EACH PARTY MAY BRING CLAIMS AGAINST THE OTHER ONLY IN YOUR OR ITS INDIVIDUAL CAPACITY, AND NOT AS A PLAINTIFF OR CLASS MEMBER IN ANY PURPORTED CLASS, CONSOLIDATED, OR REPRESENTATIVE PROCEEDING. The arbitrator may not consolidate more than one person's claims and may not preside over any form of representative or class proceeding.

d) Equitable relief — Notwithstanding the foregoing, either party may seek injunctive or equitable relief in any court of competent jurisdiction to protect its intellectual property rights, confidential information, or to prevent imminent or actual harm.

e) Small-claims exception — Either party may bring an individual action in a court of competent small-claims jurisdiction in lieu of arbitration if the amount in controversy is within the small-claims threshold.

f) Jurisdictional carve-out — Some jurisdictions (including certain EU member states) do not enforce binding pre-dispute arbitration clauses against consumers. In those jurisdictions, consumer users retain their statutory rights to bring suit in their local courts; the arbitration agreement above does not apply to them to the extent prohibited by their local mandatory law.

g) Opt-out — You may opt out of this arbitration agreement by sending a written notice to legal@ddzu.net within thirty (30) days of first accepting these Terms, stating your name, email, and an unambiguous statement that you wish to opt out of arbitration. If you opt out, both parties retain the right to litigate disputes in court in accordance with Section 17 (Governing Law).

19. Export Compliance; Sanctions

The Service may be subject to United States, European Union, United Kingdom, Hong Kong, and other applicable export-control and economic-sanctions laws. You represent and warrant that (i) you are not located in any country subject to a comprehensive embargo identified in Section 1; (ii) you are not on any U.S., EU, UK, UN, or other applicable list of restricted parties; (iii) you will not use the Service in violation of any export-control or sanctions law; (iv) you will not transmit through the Service any technology, software, or content the export of which is prohibited by applicable law without obtaining the necessary licenses.

20. Apple-Specific Terms

If you obtained the App from the Apple App Store, the following additional terms apply: (a) these Terms are between you and QuickSend only, not with Apple, and Apple is not responsible for the App or its content; (b) the license granted is limited to use on Apple-branded products that you own or control, as permitted by the Apple Media Services Terms; (c) Apple has no obligation to provide maintenance or support; (d) in the event of any failure of the App to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price of the App; to the maximum extent permitted by law, Apple has no other warranty obligation, and any other claims relating to such failure are solely QuickSend's responsibility; (e) QuickSend, not Apple, is responsible for addressing any claims by you or a third party relating to the App, including (i) product-liability claims, (ii) any claim that the App fails to conform to legal or regulatory requirements, and (iii) claims arising under consumer-protection or similar law; (f) in the event of any third-party claim that the App or your possession or use of the App infringes that third party's intellectual property rights, QuickSend, not Apple, will be solely responsible for investigation, defense, settlement, and discharge of such claim; (g) Apple and its subsidiaries are third-party beneficiaries of these Terms, and upon your acceptance, Apple has the right (and will be deemed to have accepted the right) to enforce these Terms against you.

21. Google-Specific Terms

If you obtained the App from Google Play, the Google Play Terms of Service additionally apply. Google is not a party to these Terms and has no obligations with respect to the App. To the extent of any conflict between these Terms and the Google Play Terms of Service, the Google Play Terms of Service control with respect to your relationship with Google.

22. General

Entire Agreement: These Terms, together with the Privacy Policy and any documents expressly incorporated by reference, constitute the entire agreement between you and QuickSend regarding the Service, and supersede all prior or contemporaneous communications, proposals, and agreements (whether oral or written).

Severability: If any provision of these Terms is found unenforceable, that provision will be enforced to the maximum extent permitted, and the remaining provisions will remain in full force and effect.

No Waiver: Our failure to enforce any right or provision will not be a waiver of that right or provision.

Assignment: You may not assign or transfer these Terms or your rights hereunder, by operation of law or otherwise, without our prior written consent. Any unauthorized assignment is void. We may assign these Terms without restriction, including in connection with a merger, acquisition, financing, reorganization, or sale of all or substantially all of our assets.

Force Majeure: We shall not be liable for any failure or delay in performance caused by events beyond our reasonable control, including natural disasters, war, civil disturbance, terrorism, governmental action, internet outages, third-party service failures, pandemics, and labor disputes.

Notices: We may give notices to you by email, in-App notification, or by posting on our website. You may contact us at legal@ddzu.net. Notices to us are deemed received when actually received in a legible form.

Headings: Section headings are for convenience only and have no substantive legal effect.

Language: These Terms are drafted in English. Translations are provided for convenience; in the event of any conflict or inconsistency, the English version prevails, except where applicable mandatory law requires another language to prevail.

No Third-Party Beneficiaries: Except as expressly set forth in Section 20 (Apple-Specific Terms), there are no third-party beneficiaries to these Terms.

Relationship: Nothing in these Terms creates any agency, partnership, joint venture, employment, or fiduciary relationship between you and QuickSend.

23. Contact

Legal and DMCA notices: legal@ddzu.net

Privacy inquiries: privacy@ddzu.net

Customer support: contact@ddzu.net

Operator: Zhang Jie. Postal address available upon valid written legal request to legal@ddzu.net.

24. AI-Assisted Drafting Disclosure

These Terms were prepared with the assistance of a large-language-model AI tool, using widely adopted SaaS templates and reference materials. They have not been individually reviewed by external legal counsel as of the Effective Date.

This disclosure does not affect the legal enforceability of these Terms but is provided in the interest of transparency. We encourage users to consult independent legal counsel if they have any questions about how these Terms affect their rights.