Hey Todd,
There are unfortunately some inherent limitations to title generation for the Events page title – even without Yoast active and installed on your site.
But with the combination of of The Events Calendar’s unique events-page generation, and the odd and hard-to-workaround ways Yoast SEO handles page <title> tags, you will unfortunately need some custom code at minimum to force the display of custom titles. Meta descriptions are tricky too, but for now we should first ensure you can get titles working as that is essential.
For getting the titles to work, does using the code solutions recommended by Brook in this other forum topic help for you? https://theeventscalendar.com/support/forums/topic/page-title-for-main-event-page/
Check that thread out and read through Brook’s recommendations, as they are sound and the code he recommends has worked for other users since.
Let us know what you find!
— George