Can't open PDF on Mac

A couple days ago, Acrobat would not open any file.  It attempts to open but nothing shows up, except for the tool bar, which shows Adobe Acrobat.  I'm using Creative Cloud and I'm on the latest version of Mac High Sierra 10.13.4.  I've uninstalled and reinstalled multiple times.  I've removed all Adobe products and reinstalled them. Any help would be great appreciated.