Sometimes when you sign up on the iOS or Android app, it won't recognize you as a subscriber right away. If this is happening for you, please try the following steps to connect it to your app subscription:
Uninstall the app and reinstall the app
At the main sign-in screen, tap the "Restore iTunes subscription" or “Link to an existing iTunes subscription" option in the iOS app, or "Link your existing Google Play subscription" for Android. It will appear at the very bottom of the screen.
Note: Do not attempt to log in; you need to be signed out for these steps to work.