Hello Rob,
Thanks for writing in! You may have inserted a broken html code on the page which may have caused the issue. I have find one:
<p style="text-align: center;"><span style="color: #ffffff;"><br />
NO ACTIVITIES<br />
Please double check the page and correct all the html codes. If nothing is helping, provide us access to your site so that we can check your settings. Please create a secure note with the following info:
– Link to your site
– WordPress Admin username / password
To know how to create a secure note, please check this out: https://theme.co/apex/forum/t/how-to-get-support/288
Regards.