The script is a simple smooth scroll effect for internal page anchors. It works on our live site that has a different theme, but not in staging where we are switching to Pro.
Click the page links at the top and see how the smooth scroll effect is working on live, but not on staging.
The external script is linked in the footer in both cases (general.js located in the child theme folder). We also had this same problem on the homepage when trying to use a jQuery script called Paroller. You can see it in the footer as well (jquery.paroller.js), but the script didn’t actually work until we linked it internally Visual Composer’s Raw JS module.
Had to make one minor change (removing one closing parenthesis from line 1), but now it works!
Thank you so much! By the way, this theme is an amazing improvement from the already awesome X theme. We are very happy with it and all of your support has been amazing. Keep up the good work!