Hi there, sorry for the delay, I had to clone the site in order to check – so if I switch to the Twenty Fourteen theme, there is no issue when loading the page in edit mode. As soon as I switch it back to Enfold, same issue occurs again. Given that it’s only the homepage where this happens, and even if i create new versions of it from scratch the same problem appears, I am assuming there is something in the page content/shortcodes which is causing it to fall over. I can give you access to the cloned site if that would help?
Thanks