Hi Chris,
Actually, the code might cause the issue. You can test that.
Try to remove the code and check the browser console and see the case. If there is no error then it shows that the code is causing that error.
By the way, you gave us the credentials to a site and gave the link to complete another site that the problem is there.
Please add a secure note and on that note give us the link of a test page that you will create, and will use the Content Area element to add the code of the plugin there. And then get back to us with the login information, so that we can check and see if we can give you pointers that you can communicate with the plugin developer.
Meanwhile, I see that you are using version 6.1.6 of the theme with an old version of the Cornerstone. Please backup your website completely and update the Cornerstone to version 3.1.6.
Thank you.