Hi there,
Thanks for writing around! I checked your setup and you’re using an outdated version of X and Cornerstone, please update both X and Cornerstone to the latest versions. 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If you find anything to be out of date, you can review our update guide.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 you’re using Cloudflare’s WP Rocket, this issue could probably be caused by Cloudflare’s rocket loader.
The loader loads your site’s javascript files asynchronously in which the order is not respected at all.
Please purge the cache and disable your rocket loader.
Let us know how this goes!