If you reinstall the Ingage Presentations app, wipe your device, or move to a new device, your in-app subscription purchase may not be recognized and you may receive a downgrade prompt. To reinstate your active subscription...
1. Tap to "Restore Subscription".
2. Enter your iTunes password and tap "OK".
Make sure that the Apple ID that appears here is the same one you used to purchase your subscription. If it isn't, you need to first login to that account by following these instructions.