I am experiencing the same problem that was described in the previous thread (“Unable to sign in with DM app”), but since that topic is closed, I am opening a new one.
I had the same problem on my CMF 1 and fixed it with running the “Forgot my password”-Routine. This leads to some E-Mails and should activate the correct loops in the dm-App. Seems to be an app-problem since i got the same issue on my iPad. Once logged in, never log off anymore
I am experiencing the same issue and contacted dm. Their support told me that the app requires Google Play Services to work – period. I tried to explain to them that this is nonsense, but they did not seem to care at all. At the end, I deleted my dm account and asked them to delete all data they had about me.