Hi There,
Thanks for writing in! Upon checking, I see that you’re using an older version of X theme (5.1.0) & Cornerstone (2.0.6). Latest version numbers you can check from the following link (https://theme.co/apex/forum/t/troubleshooting-version-compatibility/195).
Please try updating your X theme & Cornerstone and then try testing it again (https://theme.co/apex/forum/t/setup-updating-your-themes-and-plugins/62).
Let us know how it goes.
Thanks!
