This worked for me
what worked for you?
Since upgrading to HA (core) 0.104 and changing the DNS server on my RPI and adding mobile_app:
to my conf file the android app is finally functional for me.
[edit]: corrected mobile:
to mobile_app:
mobile_app:
I had the exact same issue with android app and docker-based home-assistant version 0.109.6: I could not login via the mobile app and I got the Timeout while looking up redirect_uri https://home-assistant.io/android
error.
I tried to ping home-assistant.io
from within the HA docker container, but without luck.
I ended up disabling IPv6 on the host ubuntu machine in which I run HA, and now everything works fine.
Just found out that on an older phone (lower resolution?) I need to rotate the phone to landscape (horizontal) to see the username and password fields and no errors.