eo_fullcalendar keeps loading but never finishes

Have you tried the suggestions in the FAQ? In short, if you don’t even see the calendar, it’s likely some form of javascript issue, if it does, but you don’t see events, it’s likely to be an issue with the ajax response.

The latter can occur when in WP_DEBUG mode, and you have plug-ins/themes with errors.

Sorry Stephen, I should have seen that FAQ info.
It didn’t helped, but i’ve noticed something interesting.

On the live server it does work:
https://eventstest.webipack.com/events/event/

But on my local env I do see the ajax requests in the network tab but they always get an empty response:
https://www.dropbox.com/s/1xapam96kiv2ock/Screenshot%202015-07-24%2010.53.39.png?dl=0

This happens when I first load the page (full calendar trying to load the events) and when I try to navigate the full calendar views and/or the calendar widget months.

Do you have any ideia of what might be causing the issue locally?

Ok, still not sure why it doesn’t, but at least I now what’s causing the problems.
Im running the site with BrowserSync and that seems to the reason for the ajax requests to break.
Not sure what the solution will be, will post it here if I find it.

Damn, been using Firefox this last few days, once I opened the affected page on Chrome I got my answer:
XMLHttpRequest cannot load https://testing.webipack.dev/wp-admin/admin-ajax.php?action=eventorganiser-fullcal&start=2015-07-20&end=2015-07-27&timeformat=H%3Ai. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'https://localhost:3000' is therefore not allowed access.