Our detectives are back with the following intel on this WordPress site
The site is using two themes, one child and one parent. The child theme is based on the parent and often custom to the site. The parent theme is CoopersTown theme by Odd Alice .
We could identify 4 plugins (there might be more) - Avatar Manager , BJ Lazy Load , btdm-core and custom-cookie-message-btdm-extension
Child theme for BTDM Core Theme [Cooperstown].