Hummingbird CDN Cors policy issue

After activating the Asset Optimization with WPMU DEV CDN, I got a CORS policy issue:

Access to Font at 'https://hb.wpmucdn.com/fonts/fontawesome-webfont.woff2?v=4.7.0' from origin 'https://feedbackglobal.org' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'https://********' is therefore not allowed access. The response had HTTP status code 403.