Font package error leads to dead link?

Hello,

I downloaded the most recent version of Adobe Acrobat Reader DC and certain files won't display properly. I get an error message with a box that leads to a dead link every time.

I added a few add-ons to try and fix it, but none of them made a difference. The add-ons I downloaded and installed (if the Reader would let me) are: Adobe Acrobat Reader DC Spelling Dictionary Pack (Continuous) - For Acrobat Reader DC version 19.x​, Adobe Acrobat Reader DC Font Pack (Continuous) - For Acrobat Reader DC version 19.x​, Adobe Reader 11.0.09 Font Packs - Asian and Extended Language Pack​, Adobe Acrobat Reader MUI DC Windows (Continuous Track)​​, and Adobe Acrobat Reader DC (Continuous Track) update - All languages​.

Here's the dead link I keep getting: https://www.adobe.com/cgi-bin/acropluginfinder?type=LangPkg&name=Extd&os=Win&vers=19.0&

And here's the error message:

Thank you in advance for your help.