The Icons are not visible in Firefox, Chrome, IE or Safari

Please contact to your hosting company to configure your server follow this guide: http://enable-cors.org/server.html

If you do not explicitly allow this, the browsers should not use fonts served from a different domain.

Please also note that there is not much we can do to fix this issue because this problem is not a theme related issue and the host company will not allow third party to mess around with the server configuration. 

Regards