The browser is blocking this as you are not serving fonts via https.
PLease install this plugin https://en-gb.wordpress.org/plugins/really-simple-ssl/ and then also you will want to add this to your site’s .htaccess file.
# Allow access from all domains for webfonts.
# Alternatively you could only whitelist your
# subdomains like "subdomain.example.com".
<IfModule mod_headers.c>
<FilesMatch "\.(ttf|ttc|otf|eot|woff|font.css|css)$">
Header set Access-Control-Allow-Origin "*"
</FilesMatch>
</IfModule>