Something is wrong with your website setup.
You have a CORS issue. Please see explanation.
The following is what you will see if you use firebug error console.
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://vipermetal.fi/wp-content/themes/evolve-plus/library/media/js/fontawesome/fonts/fontawesome-webfont.woff2?v=4.3.0. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).
Sorry, I am not server expert. Cannot help in this issue.