Betreff: Why adobe fonts keep disappearing?

Yep.. 4 Years later and same Problem here !

Yesterday I installed a lot of new Fonts. I even use them in some Designs.
And today round of half of them where gone when I open Illustrator!
Why only some and other not... Mistery.
Fix:
I closed Illustrator, 
I open the Creative Cloud Desktop : All Fonst where there 
I opened Illustrator again: All Fonst where there !