Our detectives are back with the following intel on this WordPress site
The site is using the evolve Plus theme by Theme4Press .
We could identify 2 plugins (there might be more) -
WP Fastest Cache
This information was last updated 19 January, 2019
Multipurpose WordPress theme
This plugin will improve SEO by helping search enginess better index your site using sitemaps.
The simplest and fastest WP Cache system