Hey Jeff,
Apologies for the delayed reply here!
1. You mention this in your post:
I have comments enabled on the events plugin
How, specifically, did you enable comments?
2. Do non-Disqus comments, i.e. the normal “built-in” WordPress comments work fine? (testing this will require deactivating Disqus, but just temporarily!)
3. Can you share your “System Information” with us? Here’s how → https://theeventscalendar.com/knowledgebase/sharing-sys-info/
Thank you!
George