Sometimes, just turning off "Adobe Fonts", and then turning it back on works for me. Although, today was frustrating for me, so no promises that this is actually doing anything. arrrrgggg!
Go to the Creative Cloud application > Account > Preferences > Services
Have you tried using step no:6 mentioned in the article I have shared above to resolve the issue in activating fonts? Also, try to reset the Creative Cloud desktop app, make sure it's in the foreground, then press and hold: Win: Ctrl + Alt + R. Mac: Cmd + Opt + R.