Thank you Mosesparente. Please remove the contents of /Users/<UserName>/Library/Application Support/Adobe/OOBE. You can access your hidden User library by holding down the option key and using the Go Menu from the Finder.
Then please try re-opening the Creative Cloud Desktop application and signing back in.
Thanks, I just fixed the problem with the support of the chat.
I uninstalled the CC app,
deleted the Adobe Application manager folder,
deleted the AAMUpdater and OOBE folder in the hidden ~/library > Application support > Adobe folder,
deleted the Adobe Application Manager and OOBE folders in /library > Application support > Adobe folder,
downloaded and reinstalled CC app.
Thanks