Licence error Lab-Licence

Hi,
Lizenzfehler Rhino
a participant in my course cannot retrieve the Lab license from the Rhino webserver. the following error message always appears. I have already reinstalled Rhino and also recreated the invitation link to the license. The error still appears.

Hi Michael -
I see that an issue that caused this for a small number of users was fixed a few hours ago.
From the developer:

If users are having this issue, the solution is to click Try Again and it should work for them.

-wim