Thanks for writing in! I checked your setup and I see you're using an old version of X and Cornerstone. Please update both to the latest versions first. You can find the latest version numbers here: (http://theme.co/changelog/) Then you can compare them to what's installed on your site.
If you find anything to be out of date, you can review our update guide.
Also make sure to clear all caches including mobile browser cache then deactivate your caching plugins and other optimization plugins.If you're using a CDN, please clear the CDN's cache and disable optimization services.
Let us know how this goes!.