To unlock your paid features:
- 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 Recover Paid App.
- Close the free app by opening the list of recent apps and tapping on the X in the upper right-hand corner.
- Then launch the free app again. You're paid features should now be restored and ready to use.