Cubase Pro12 Stuck at Startup - Content License Check

About two times a week, Cubase 12 pro stucks at startup. Its happens at “initialising; Content license check of 62 contents” Sometimes it takes only a spit second and sometimes it gives an error. after clicking “retry” it always starts up very fast after that.
I tought I had it fixed by not using my dongles anymore, but yesterday when I installed two extra progs ( Steinberg Groove agent se ) the problems are back.
I am trying to reduce the number of licens check now, but how do I do that please?
I deleted a buch in Download assistant ( Delete downloaded files) But at startup there are still 62 contents. And in windows 10 apps, I don’t see them
(edit) Sorry… found it : library manager