Hi there, Roy! Thanks for getting in touch. 🙂
That’s definitely strange. I see how clicking on the event for the 29th makes it disappear when you are logged into WordPress. What’s even more interesting is that it only seems to happen on that particular event. Clicking on the event for the 2nd works properly.
I was unable to reproduce the issue on my own installation. Could you try temporarily activating the default Twenty Thirteen theme, to see if the issue happens there as well?
If disabling the theme fixes it, that’s good news! It means we have narrowed the issue down to a theme conflict.
If the issue is still there when using the default Twenty Thirteen theme, then we can try testing for conflicts with other installed plugins. Using the Twenty Thirteen, please try deactivating all of your plugins, except for the ones from Modern Tribe. Does that solve the problem? If so, reactivate the plugins one at a time until the issue pops back up, then tell me which one was causing the issue.
These steps are also outlined here if you want some more details on how to test for conflicts.
Give those steps a shot and let me know what you find.
Cheers!
Geoff
P.S. I removed the login credentials from your original post as a precaution.