Font fails loading

WpDiscuz has an error in font loading…the constructed url is really weird. (it doubles up and because of that fails).

It tries to load this:
https:/–our domain–/wp-content/plugins/wpdiscuz/themes/default/https://–our domain–/wp-content/plugins/wpdiscuz/themes/default/css/fonts/sqr721c-webfont.woff2

See the double https://–our domain–

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