Hello again Rob,
Thanks for reaching out and I’m sorry about this issue.
I checked the code of your site and it looks like there is a <pre> </pre> tag in there which is responsible for the false rendering of the page.
This is part of the code:
<article id="post-7416" class="post-7416 page type-page status-publish hentry">
<h1 class="entry-title main_title">Events – Week of August 21, 2017</h1>
<div class="entry-content">
<pre> <---- THIS IS THE FAULTY ONE
[...]
</pre>
</div>
</article>
Based on the location of that pre element, it looks like when you pasted / entered the shortcode, somehow this tag got pasted as well. You can check that in the text view and just simply remove the opening and closing <pre> tags. That should fix it.
Let me know if this solves it.
Cheers,
Andras