Hi Joao,
Many thanks for getting back to me.
The site hasn’t been edited in wordpress editor, but it was migrated 3 - 4 months ago.
I have gone through the Plugins and i am getting an issue with two, one was a Godaddy plugin from their manage wordpress hosting, which was for clearing the cache, i removed this with the help of godaddy, and before that was removed the menu wouldn’t extend at all. Now it extends but as you say it is a bit sluggish even though the site is through a Cloudflare CDN.
The other that gives issues is Autoptimize, when i turn this off it effects the page layout quite substantially. So i have left this switched on.
These plugins have been installed for sometime, i would say since i created the site, but it seems lately this issue has occurred.
Can you suggest anything to help? I would go through the back ups but i dont know when this issue started and there are several changes that i have made to the site in the last few months and i dont want to lose them.
Strangely enough if i create a new page it allows me to use cornerstone as normal, but with some of the old pages it wont open in cornerstone.
Perhaps re installing cornerstone or x theme, do you think that would help?
Kind Regards
Mario