Issues with firmware upgrade to V4.22.005

Hi everyone,

After upgrading the firmware of my NVR DS-7732NI-I4/16P to the latest firmware available on the Hikvision website V4.22.005 build 191208, I can no longer log in with my previous username and password, nor I can set my username in the login page. I can just choose one of the unreadable preset values.

Any clue how I can resolve? Please help....

Thanks,
Jul