Hello Alexander,
Could you please go to "Settings" in the main VCDS menu, then "Connection Test", "Save", and then in the main menu, click on "About..."?
Please email me a
Screenshot of the "About..." dialog. In the
Screenshot, there should be green text next to the serial number of the diagnostic cable, indicating that the interface is licensed.
I'm pretty sure I checked that already, but you never know.
It's possible that clicking "Connection Test" in the program settings will already resolve the issue.
Best regards, Rainer.