Email support
Tell us your app version, device and OS version, what happened, and what you expected. A screenshot can help if it does not contain sensitive information. We do not operate a separate HSK Note account or password system.
A purchase did not unlock access
Check that you are signed into the Apple or Google account used for the purchase, connect to the internet, and use Restore Purchases in the app. Purchases are restored within their original store; Apple purchases do not automatically transfer to Google Play or vice versa.
If it still fails, include the product name, purchase date, store, and order or transaction reference if available. Do not email a store password, complete payment-card number, or private purchase token. Restore Purchases restores paid access, not local study history.
Cancel or request a refund
Cancel in the account that pays for the subscription. Uninstalling the app does not cancel it. Refunds depend on the store’s policy and applicable consumer rights.
Data requests and learning corrections
For a privacy request, describe the data and action requested. In Settings, use Support information to copy both the support/installation ID and analytics ID, and include the copied information. This copies information locally; it does not send it automatically. An unavailable analytics ID cannot be used to locate analytics records. One support ID may not identify all analytics data. Ask before uninstalling if you need help locating these identifiers.
For a vocabulary correction, include the headword, level, app language, and the meaning or example that needs review. Your learning progress is stored locally; we do not have a cloud study backup to restore deleted progress.