Support
For help with the app, check the app page in Google Play or the App Store for the support email address. Describe what happened and we will review your request.
Before you email
Please include the app version, device model, operating system version, and a short description of the issue. Screenshots can be useful when they do not contain private information.
Do not include passwords, payment card details, identity documents, personal identity numbers, or other sensitive personal data.
Purchase help
Restore a previous lifetime purchase
- Connect the device to the internet.
- Confirm that the App Store or Google Play uses the account that made the original purchase.
- Open the app and use the restore purchase option on the purchase screen.
Payment completed but premium is locked
First try the restore steps above. If access remains locked, email support with the app version, device details, store used, and approximate purchase date. Do not send a full receipt or payment details unless support specifically asks for a redacted copy.
Payments are processed by Apple App Store or Google Play. RevenueCat is used to check and restore the lifetime entitlement. Refund requests are governed and handled by the store where the purchase was made.
Other support topics
Content or translation issue
Include the chapter, section, question, and language involved. Explain what appears incorrect or unclear.
Progress reset or lost progress
Progress is stored locally on the device. Removing the app, clearing its storage, changing device, or some device restore processes may remove local progress. KanonLabs does not keep a cloud copy that can be restored.
Crash or display issue
Include what you were doing immediately before the issue, whether it happens repeatedly, and any relevant accessibility or display settings.