Good evening Jeremiah and welcome to the Events Calendar Support forum!
Thank you for reaching out to us.
We are sorry to hear about the recurrence rules no longer working on your website.
I would love to help you with this topic.
I took a look at your website and it appears this is caused by some mixed content (secure and insecure) being delivered on web pages in spite of the SSL certificate in place.
The first thing I would recommend to try is to head over to Settings in your WP admin
Once you are there, please make sure that both URLs for your site are set to https.
If that does not work, as a first troubleshooting step, could you please provide us with your complete system information in a private reply using the instructions found in the following link?
https://theeventscalendar.com/knowledgebase/sharing-sys-info/
Let me know how that goes.
Best regards,
Geoff B.