i feel myself like ncfnoob :(
i changed the pin to a shorter one and tested it again. works. thanks
reinstall did not fix the problem
btw: fallback login via google is working
i have the same problem with the Sony Xperia Z2 phone.
No fix after reboot.
Any other ideas?
Sony Xperia Z1 D6503
Android intern lock: none
"Use with No Lockscreen": disabled