This is the message I am greeted when I access the official website of the application: "Hi, Sorry but we are updating the site. Please try again later.". This means you won't have the possibility to obtain an updated version of the software to enhance its compatibility nor to contact the developers to ask them about the issue with Adobe Reader DC. I recommend you uninstall that version, then use the old one, but don't upgrade.
Use the OldApps website to download a previous version: https://goo.gl/sZAs0q