I'm using CST Studio Suite  Cable Studio to perform the same operations as shown in the YouTube video below.

But, when I try to refresh the cross section in the Impedance Calculator, the message "License key check failed. Could not analyze 3D geometry" appears. I can't run it.

There are no problems with the license server or license file.
I'd like to know the reason for this.

https://www.youtube.com/watch?v=SNxWNnutk5k