Our detectives are back with the following intel on this WordPress site
The site is using the cherry theme by Template_Help.com .
We could identify 2 plugins (there might be more) -
WP Super Cache
This information was last updated 18 May, 2017
A theme for Wordpress 3.8.x
This plugin will improve SEO by helping search enginess better index your site using sitemaps.
A very fast caching engine for WordPress that produces static html files.