I tried going to Events in your menu; however, this results in 404: https://sportsinnovation.unlv.edu/events/. Is this your default calendar page?
Please check out this article we have for resolving 404s: https://theeventscalendar.com/knowledgebase/fixing-http-404-errors/
Please make sure to whitelist (https://managewp.com/blog/whitelist-ip-addresses) these two IP addresses for the import service: 192.190.220.23 and 199.189.224.106.
Looking forward to hearing from you.
Added to cloudflare here:
https://dash.cloudflare.com/0fdefe9501c327ae368b2adde4b2c5e0/create.vegas/caching/cache-rules
did not seem to be a place to add in wp rocket
WP Rocket and Event Imports