If you have previously purchased a subscription, but it is now lost for any reason (e.g. you've reinstalled the app), you may need to restore your Premium subscription. To do it, log in the app and tap the menu button on the main screen:
Tap Restore purchases:
The app will then connect to App Store or Google Play.
The store will ask for your account data to restore the purchase. Once you submit it, the Premium for the selected period will be activated, and you'll see this information appear in your app profile:
If you face any problem with restoring your Premium, please email us at firstname.lastname@example.org.