Good evening Kyle and welcome back!
Thank you for reaching out to us and for the system information.
We are sorry to hear about the events not displaying properly after the update.
I would love to help you with this topic.
The first thing I would try is to re-save your permalinks by going to Settings > Permalinks.
Secondly, please note that Event Rocket is retired since version 4.x of the Events Calendar plugins.
As such, it is very likely that it is going to cause several issues by keeping it active.
Finally, you might want to also upgrade to the Events Calendar Pro 4.1.3
Let me know how that goes.
Best regards,
Geoff B.