Refund Policy

Effective date: October 1, 2026 · Last updated: October 1, 2026

This policy applies to prepaid top-ups for Koozhan AI (酷站AI), a product operated by Sunyears, Inc. It applies whether your order was sold by FastSpring.com, our authorized reseller, or directly by Sunyears, Inc. We review every request; approved refunds are issued by the seller of the order.

1. Refunds of unused top-ups

You can request a full refund of a top-up to the original payment method when all of the following are true:

  • you request it within 7 calendar days after the payment succeeded;
  • no billable API usage has occurred on your account since that payment;
  • you can verify the account and order, for example by writing from your account email and giving the order number; and
  • the payment is not under investigation for fraud, abuse or a payment dispute.

Your balance is a single pooled balance, so any billable usage after a payment means that payment is no longer unused.

2. When the standard refund does not apply

  • billable usage has occurred since the payment;
  • more than 7 calendar days have passed since the payment;
  • promotional, bonus or manually granted balance;
  • accounts suspended or terminated for breaching our Terms of Service, fraud or abuse;
  • changes in exchange rates, or simply not using the service;
  • a payment already disputed with your bank or card issuer while that dispute is open.

3. Billing problems we always review

Duplicate charges, unauthorized payments, payments that succeeded without balance being credited, billing errors, and refunds required by applicable law are not limited by the conditions above. We investigate each case using the order, usage, security and payment processor records, and refund where appropriate.

4. Cancellation

Koozhan AI has no subscriptions and never charges you automatically, so there is nothing to cancel. Each top-up is a one-time payment. You may stop using the service or ask us to close your account at any time; any refund is handled under this policy.

5. How to request a refund

Email [email protected] from your account email with the subject "Refund request" and include:

  • your Koozhan AI account email;
  • the order number;
  • the payment date and amount; and
  • the reason for the request.

Never send your password, full API key, full card number, card security code or payment account password. If we need more information to verify the transaction, we will ask for it securely.

6. Processing time

We review complete requests within 2 business days. Approved refunds are submitted to the original payment method by the seller of the order (FastSpring for FastSpring orders, Sunyears, Inc. for direct orders), and usually arrive within 5 to 10 business days after that, depending on your payment provider and bank. When a refund is approved, the matching balance is removed from your account. If the balance is no longer available or we find unusual activity, the request may be held for manual review.

7. Payment disputes

FastSpring orders appear on your statement with a FastSpring descriptor (such as “FSPRG”); direct orders appear as “KOOZHAN AI”. If you believe a charge is wrong, please contact us first at [email protected]; we can usually resolve it faster than a bank dispute. If you open a dispute, the related balance may be frozen while the payment processor investigates. This does not limit any rights you have under applicable law.

8. Contact

Operator: Sunyears, Inc. · Product: Koozhan AI · Payments and Billing
Refunds and billing: [email protected]
See also our Terms of Service and pricing and top-up details.