We updated the plugin to version 6.1.4 and have updated X theme to 9.1.4.
After updating, when trying to edit a page, cornerstone is just reading and not loading all its features. See loom- https://www.loom.com/share/615bb5322050472fb41118d09433e32b
Also, we had to go back to a previous backup because of this issue and after restoring the website - we had this error (https://prnt.sc/Lh9kazAtppP0). We had to deactivate cornerstone plugin because of this error.