Thanks for assisting Tobias and Andy.
TFA via u2f token works great with this build. Both nfc and usb work (made my otg cable useful again)
The reason I didnât get a TFA notification is because I was using an app token. I was so used to using that instead of the main password. Nice to see that all TFA options are available in the android app, equal to the web gui.
One tip for NFC: keep the key on the phone long enough (1-2 seconds). The phone vibrates when NFC is detected, but that doesnât mean that the token is accepted in the app.
The interface for u2f looks nice and clean, although english only, perhaps I need to file an issue for that on github.
Great work!