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For app, purchase, accessibility or publishing questions, contact berthlab@txyou.com. Support is available in English and Chinese.

A purchase is not showing

Use Restore purchases in the app with the same Apple account used for the eligible purchase. The website cannot unlock PRO or restore an Apple transaction. Include the app version and what the app shows when contacting us; do not send passwords.

Does practice require an account or internet?

No account is required for normal practice. Training data is local. Apple purchase operations and optional website publishing require network access. Restoring a purchase does not synchronize your local practice history between devices.

Why is a replay still pending?

Uploads are reviewed before publication. Keep the private management link to check the status. Publication and inclusion in the indexed tutorial channel are separate decisions; no automatic approval is promised.

How do I report or remove a video?

Use the Report control on the public replay. Owners can withdraw a replay using the private management page. For urgent privacy or copyright concerns, email the public URL and a clear description of the problem.

Refunds and billing

Apple processes app purchases and handles refund eligibility. Use Apple’s official refund request process. Removing local training data or deleting a website video does not cancel or refund an Apple purchase.

Apple: request a refund for apps or content · Data deletion instructions