Good evening Anthony and welcome back!
Thank you for reaching out to us.
We are sorry to hear about the 404 issue you have been facing.
I would love to help you with this topic.
Kudos for the workaround!
Based on that, I believe that the cause is probably that you have a “real” page that has the http://bridgepointe.staging.wpengine.com/events/ URL.
Our calendar pages are actually not “real” pages. But, they need total exclusivity of the slug chosen.
In other words, if you have an existing real page that has the http://bridgepointe.staging.wpengine.com/events/ slug, it will create 404 pages.
The solution is to change the slug of the “real” page (or delete it if you are not using it) or change the slug of the Events Calendar (which you did).
Let me know if that helps.
Have a great day!
Geoff B.