Bugs Klicker 3.0

I just played with Klicker 3.0. I am very sorry, but I have to report that this version seems to be very buggy. The migration of questions from 2.0 to 3.0 seems to be ok. However, I am not able to create a live-session. The creation process seems to work and creation is confirmed at the end of the process, however, the new session doesn't appear anywhere. It is not in the course and not in the list of sessions (only old and finished sessions in this list?). Creating a microsession or "Lernelement" also failed. I tried several times with different settings. Despite this buggy behaviour, I found it very confusing to have the list of questions so prominently presented on the screen already during the creation steps 1 and 2. They are to be inserted only in step 3!