This article covers restoring your purchase on iOS and Android devices.
On your Abide app go to Profile > Settings > Restore Purchase
iTunes Restore Purchase statement: Users restore transactions to maintain access to the content they've already purchased. For example, when they upgrade to a new phone, they don't lose all of the items they purchased on the old phone. Include some mechanism in your app to let the user restore their purchases, such as a Restore Purchases button.
You will not be double charged when you hit Restore Purchase.
On your Abide app go to Me > Settings > Restore Purchase
You may also restore your Abide purchase through Google Play: Download and open the free app. Open the drawer from the upper left corner of the screen and select Support. Select Purchases and Paid App from the menu. Tap on the menu option, located in the upper right-hand corner of the screen. Tap on the Recover Paid App.