Cloud Documents not accessible in Acrobat

Hope someone can help. I just recently noticed after the latest Catalina 10.15.7 update, that I can no longer get access to my Document Cloud files and it's really frustrating.

Initially I had a problem where I could save or open any files from Acrobat, as when I tried I just got a black window when I selcted "Save as" or "open". I read on a help forum, to get around this, you have to go to "Preferences" - "General" then untick "Show online storage when saving" & "Show online storage when opening". This gits rid of the black "save" "Open" window but now I have no access to Document Cloud"

Has anyone else having the same problems and is there a solution??