You will need a paid subscription to download courses for offline viewing within the Android app. To verify your subscription, select the gear icon from the home screen of the app to view your settings. On the next screen you will see your profile details; your username is located under your name at the top of the settings screen.
If the username shown in the profile screen does not match that for your account, you will need to sign out of the app and sign back in with the correct credentials to access the courses.
If you need help, please email email@example.com for 24/7 assistance.