Adobe Fonts keep getting removed in Creative Cloud for iPad

My Adobe fonts keep getting removed periodically from Creative Cloud for iPad.  The fonts stay installed  for a while, (a few weeks?) then I get a notice to open Creative Cloud or my fonts will be removed. But when I click the button after receiving this message, Creative Cloud will not open and hangs. So I have to quit, log out of Creative Cloud, log back in and re-install the fonts I am using.