Have you had a chance to try out our sample apps at all? I’d be curious to know if the same behavior happens there.
Yes, I tried the Android sample app and was getting the same issue if the token was expired.
You should be able to mitigate this behavior by using CredentialsManager to save a refresh token in order to renew id/access tokens as they expire. This requires passing an additional
offline_accessscope in the authorization request.
Thank you, this did fix my problem!