It's the Stäubli Robotics Suite with CS9 Emulator. I can't send you the whole project. But will prepard a project with some test variables, as soon as possible, to send it to you. 

Yes, we can meet up in a Teams meeting. That would be great.
I think we can find a timeslot if you write me an email.

Hallo together,

i do have nearly the same problems. In my case the connection is working without authentication. But if I want to connect via Username and password, to have writing capability on the OPC-UA server, i get the following error message:

I'm using the newes Version "realvirtual-Professional-2021.03". Is there a chance to connect to my OPC-UA Server? OPC-Watch works perfectly fine with authentication an writing variables.

Thanks for your support!