Remove your family data.
The current TestFlight app stores family progress on your device. There is no cloud reading-profile database.
1. Delete the local family profile
In Pennywood, open Family, then membership and account controls. Choose Delete profile and progress and confirm. If the library is locked, account controls are also available on the membership screen. This removes that family’s reading and listening positions, saved stories, activities and weekly goal from this device, then signs you out.
2. Remove the Apple sign-in connection
In your device’s Apple Account settings, open Sign in with Apple, select Pennywood and choose to stop using Sign in with Apple. Settings names may vary by system version.
Apple’s instructions for managing Sign in with Apple
3. Cancel a subscription separately
Deleting your profile or the app does not cancel a subscription. To stop renewal, open Settings → your name → Subscriptions → Pennywood, or use Apple’s subscription management page.
Support messages and other devices
To request deletion of emails you sent to support, write to lijianghao2000@outlook.com. Data saved locally on another device must be removed on that device. Apple controls its own transaction records and device backups.