Sermon Manager Menus Not Working

[sethsoasis]

Expected Behaviour

Our sermon manager plug-in has stopped allowing us to add preachers, series, topics, Bible books, sermon audio, and media in the main media page. I can work around it through the quick edit function but not in the main page.
website: grandviewca.org

Actual Behaviour

I can type in the names of the preacher, series, etc. but the "add" button doesn't actually add them, nor does a drop down appear for me to click previously used items anymore.

Steps To Reproduce

Platform

Sermon Manager Version: Version 2.16.0
WordPress Version: 5.5
PHP Version: 6.1.6 (I think)

Any Additional Info