Our detectives are back with the following intel on this WordPress site
The site is using the Alexis theme by Yan Susanto .
We could identify 2 plugins (there might be more) - All in One SEO Pack and Google XML Sitemaps
Alexis is a mobile responsive, flat design WordPress theme with a touch of minimalism. It comes with an advanced customizer that allows you to change theme color and other aspects without touching a single line of code.