I have had off and on issues with Creative Cloud, mostly in not being able to access the software. The issue cropped up with each application requiring a serial number in order access. Obviously, CC doesn't require or provide such a number so I could not access any of the applications. Here are the steps that worked for me with the help of Adobe Support.
1. Drag to your desktop the opm.db and hosts folders. You can find them by simply going to spotlight on a Mac.
2. Go to Utilities and then adobe. Uninstall Adobe Creative Cloud Manager.
3. Go to adobe.com, reinstall Adobe Creative Cloud Manager.
Following these adjustments, I was able to access my applications. At least so far.