Adobe Acrobat Reader DC can't be opened

[#1]

The Adobe Acrobat Reader DC stopped working after I tried to open a downloaded pdf file. I uninstalled the application and used Acrobat Cleaner to be sure, downloaded Adobe Acrobat Reader DC from Adobe website and I still get the message "Application Adobe Acrobat Reader DC can't be opened" when I click on a pdf file or when I try to open the application itself. I am using a Mac OS 10.13.6 (High Sierra). I downloaded Acrobat Reader Pro and it works but I prefer to use Adobe Acrobat Reader DC because it's free and I don't need the features of the Pro version. Why the Acrobat Reader DC won't open on my computer?