Step 1: Tap on the Parents button located on the bottom side of the screen.

Step 2: Follow the instructions on the screen to pass the Parental Gate.

Step 3: Tap on the Settings button.

Step 4: Tap on the IAP Restore button and follow the instructions on the screen.

Important: You must use the same Apple ID to restore a previous in-app purchase. For example, if you used Apple ID "abc@example.com" to buy a Full Version Upgrade, you must use the same Apple ID to restore the in-app purchase.

***Restore only work for non-consumable in-app purchases.