To the other issue I do need to login in rescue mode.
For that I go to the SCP --> Media --> Rescue System. Then I hit Enable Rescue System link. SCP immediately generates a root password. Then I reboot server.
But for some reason SSH is disabled by default. To enable it I use VNC in browser and enable it with systemctl enable ssh And even after that I can't login with password generated on step 1.
What did I miss?