On latest Creative Cloud update, when I click on 'Manage Fonts' it does nothing.
All other buttons seem to work fine.
Font activation in InDesign 16.3.2 didn't seem to work smoothly and I had only 1 to update/activate. I had to go to Adobe Fonts website in order to activate.
iMac 10.15.6 (19G73)
Creative Cloud 126.96.36.1999