A. 1. Ensure you are logged into the same Apple ID that you used to purchase the pro version. Go to Settings > [your name] to check. 2. Restart the app after purchasing the pro version to refresh the app's state. 3. Check for any app updates in the App Store that may address this issue.

B. 4. If the pro version still does not unlock, try deleting and reinstalling the app, then log back in with your Apple ID.