Usually, after pressing the “Buy” button in the app, you will be redirected to a shop screen to proceed with your purchase. Upon completion, the app should inform you that it is now fully unlocked.
If for some reason this has not happened, but your purchase has been completed, we recommend that you restart the app and try the “Restore Purchase” button below the “Buy” button. Please make sure you are permanently connected to the Internet.
If the purchase still does not work, please contact us via firstname.lastname@example.org.