Hi Bobmusic
Just did a quick test on Big Sur
C11
VST connect PRO 5.0.10
Login to MySteinberg was fine - just the same as in 10.5
I didn’t do a full test as I don’t think it’s fully tested - this means there is something ‘different’ on your system than mine ?
Have you tried connecting the ID login (NOT MySteinberg)
this might get you up and running ?