Also, a MacBook Pro 16, Catalina 10.15.7 with CC 1.18.28 Pro. It will not upgrade (null) version.
When I closed the lid and came back later and opened it again it was freezing the mac.
I am having the same not responding problem. I reinstalled, uninstalled and reinstalled but the problem persists. I am currently waiting to see if it will eventually start.
When it did, the problem did not go away.