Hi Mike,
Yes, I went back and figured this out on my own so that is why you are saying the latest version of Enfold now on the site.
The problem was actually being caused by some php files in the newer theme files.
The files were events_upcoming.php and events_countdown.php which are all related to The Events Calendar plugin.
In order to fix this, I had to install that plugin so that those files would no longer cause a 500 error and I was able to access the WP admin and my landing pages were no longer broken.
Thank you!