Where can I get the login and password to access the server via SSH?
All installed servers by default have an activated openssh daemon, so immediately after starting the server, you can connect to it. After registering the account, to your contact E-mail should be sent a letter, in which the server IP address, login and password of the root user will be indicated. Also, the root password can always be found in the properties of the virtual machine in the VMmanager control panel.
In addition, if you already have access to the VMmanager control panel, you can add your ssh-rsa public key to it - then the entrance to all the virtual machines installed in the future will be available by your private key.