Font awsome icons missing

I am running the free version of bridge and the font awesome icons are not showing up. I tried added the code in the link below in the .htaccess but it still doesnt work. Any ideas?

https://i-plugins.com/whmcs-bridge/knowledgebase/1089/My-icons-are-not-displaying-or-displaying-as-blocks-instead-of-the-correct-icon.html/

The page I need help with: [log in to see the link]