It would appear its isolated to this IP address or broadband supplier as it works fine on others.
http://kingsguild.co.uk/wp-admin/upload.php?item=23711
http://kingsguild.co.uk/wp-content/uploads/2017/11/Screen-Shot-2017-11-17-at-21.52.52.png
http://kingsguild.co.uk/wp-content/uploads/2017/11/Screen-Shot-2017-11-17-at-21.53.54-1.png
http://kingsguild.co.uk/wp-content/uploads/2017/11/Screen-Shot-2017-11-17-at-21.52.41.png
Interestingly, my other websites which use an older version of the theme work okay… like my own http://barrettdesign.co.uk/ which is using xstore 4.11 theme
http://kingsguild.co.uk/wp-content/uploads/2017/11/Screen-Shot-2017-11-17-at-22.02.32.png
Anyhow, Im sure you have an answer and a fix… Best Chris