Content Analytics overlay not working

Hi there,

Having real issues with the content analytics for the home page of clients website. Rather than encompassing the whole page it shows as a thin line running in the middle of the page. It appears to not be tracking properly.

The other pages look fine, just the home page that isn’t working.
Any help would be fantastic! link: http://www.matara.co.uk/

Thanks for such a great product!

https://wordpress.org/plugins/sumome/