Howdy yorkiebar182,
That is very strange! Definitely no good. I would like to help if I can, but ultimately this theme is doing some odd stuff from the look of it. Our plugin is designed to work with with themes which follow, what are essentially universal standards in WP theming. From the look of it, it is quite possible your theme is running afoul of a few WP guidelines in that regard.
You mention that your theme calls the_excerpt(). Could you try can change the theme calls from the_excerpt() to the_content() and seeing if that helps at all? I might be able to point you in the right direction if you provided us with a copy of your theme. You can do that by zipping up the theme and emailing it as an attachment to [email protected].
From the look of things though this theme is doing something very strange with the WP loop. It is somehow overriding the Events calendar’s normal loop, and trying to pack our entire loop inside of one <article> element. I have never seen that before. It is probable that the theme is using or modifying the loop in a very nonstandard way. There might not be a cure except for the author to redesign the theme.
– Brook