Sorry about the delay. I am hopeful that the issue was fixed. If not, please try following these steps and share your observations with us:
Rename CEP folder from following locations. MAC: /Library/Application Support/Adobe to CEP.old
If that doesn't help, rename extensions folder from MAC: /Library/Application Support/Adobe/UXP to extensions.old
If that doesn't help either, uninstall the application using Cleaner tool (https://helpx.adobe.com/in/creative-cloud/kb/cc-cleaner-tool-installation-problems.html...