Bug Unity Hub not working on Mac Catalina

Dear All
I too am not able to use the Hub on my Macbook (Catalina). I updated it about three weeks ago and now nothing (it did used to work as it should before this). I can launch it, and no apparent errors, but all I'm getting is this rather inactive menu



May be unrelated but I'm not now able to access any of the Microgames etc that I though I could get before, so it's a bit frustrating. Any ideas most appreciated

all the best
Graham