A subscription purchased via the App Store activates automatically on the device you use to make the purchase. If you purchase your subscription through another AVG sales channel, such as the AVG Store, you need to manually activate the app using a valid activation code.
If the issue persists, contact AVG Support.
To learn more about AVG Mobile Security, refer to the following article:
- AVG Mobile Security 1.x for iOS
- Apple iOS 10.3 or later