I did one thing differently, because I don't like to give my Google master password to a 3-party app , I used an app password specifically for the NFC ring, which I considered to be one-time and didn't write it down
Then I had to fly and put the device in flight mode and powered it off some time later.
Now I get the NFC Ring Unlock screen in flight mode when I power up the device, but I can't get the unlock screen to work (NFC is also switched off in flight mode, didn't realise that and the Google authentication is also not working) and I can't get out of flight mode!
What I tried already:
- Resetting the device by voulume-up/power, red button in SD-card and PC-companion connection.
- Trying to hit the "normal" unlock screen which appears for a sub-second period.
- Contact McLear, but they are flooded at the moment, because of the roll-out of their new products.