Site not displaying correctly after update Page Builder

I recently updated Site Origins Page Builder and since then a lot of my sites pages are not displaying correctly in Google Chrome (Version 58.0.3029.96) and Firefox (53.0.2 (32-bit)). They work fine in Internet Explore 11 (Version 11.0.9600.18638). Is this a known issue with the update or did my update go wrong, is there a quick/easy fix as I’d loath to have to redo over 60 pages. Any help would be much appreciated.

My sites URL is: http://www.pathfield.devon.sch.uk/wp-pathfield/