Ubuntu 18.04 drops Enterprise license in Service Mode
I am experiencing some technical problems installing a VNC Connect Enterprise license in an isolated (no connected to Internet) Ubuntu 18.04 system.
I have Wayland disabled and vnclicense adds the key without problem. But once I run the vncserver-x11 service, it drops the license and vnclicense -check shows no license installed and I am not able to connect from my realvnc-viewer, it arise the error code 10054 (connection reset by peer). I have another Ubuntu 18.04 working well with another Enterprise license.
Furthermore, I have tested a free VNC flavour (tigervnc) and it works well.
Any advice is wellcome. Thanks in advance.