Hey Victoria,
I’m really sorry that this issue is persisting – thank you for your patience!
That Fatal Error is something we just discovered yesterday, we are working on a fix for that to include in the coming release.
I unfortunately am still not sure why your URL is having those problems. At this point, unfortunately, the best step I can recommend is to run through our troubleshooting steps outlined here → https://theeventscalendar.com/knowledgebase/testing-for-conflicts/
Let us know what you find if you run through these steps!
And again: thank you for your patience.
Cheers,
George