Ugh! Nevermind…I figured it out. I tried loading the calendar in Chrome and it worked perfectly. Cleared old website data out of Safari and now it works.

Looked into the thread you posted and I’m not sure where to go from here. It looks like the OP didn’t have any success with adding code to the functions.php file. They solved the problem by adding Cloudflare. Is that what you suggest to solve the problem?