Hello shanson,
In you site, we found following console warning, which is preventing to load fonts:
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://wp.alteca.com/wp-content/themes/medical-circle-pro/assets/library/Font-Awesome/fonts/fontawesome-webfont.woff2?v=4.7.0. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://wp.alteca.com/wp-content/themes/medical-circle-pro/assets/library/Font-Awesome/fonts/fontawesome-webfont.woff?v=4.7.0. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://wp.alteca.com/wp-content/themes/medical-circle-pro/assets/library/Font-Awesome/fonts/fontawesome-webfont.ttf?v=4.7.0. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).That is actually server issue.
We wonder if you have just migrate the site from wp.alteca.com
We have collected some information for you
http://stackoverflow.com/questions/26125030/font-awesome-icons-not-showing-in-chrome-a-maxcdn-related-cross-origin-resource
https://www.prestashop.com/forums/topic/345555-solved-glyphicons-font-awesome-not-correctly-displayed-in-firefox/
We hope it will help you.
Best Regards,
AcmeThemes