If you did not use a config.xml file while installing the virtual appliance, it did not set PermitRootLogin.
You must logon to console, edit /etc/ssh/sshd_confg, and chante permitRootLogin to yes.
Save and `service sshd restart`
Yes, you can use the same license.
Thank you very much for quick answer!!!
We installed now with a config.xml file on a virtual floppy disk in VMWare.
And after new instalation of MWG we can connect via ssh.