Because of https://community.victronenergy.com/questions/231973/cerbox-gx-fails-with-v30-and-em540.html I tried to reboot CerboGX via SSH:
root@einstein:~# reboot
Broadcast message from root@einstein (pts/0) (Mon Sep 18 06:45:28 2023):
The system is going down for reboot NOW!
root@einstein:~#
After "reboot" the password for root was gone! Rrrrrrrrrrrrrrrrrrrrr
I had to set a new passwort in Cerbo Settings/General!