I don’t think this is a theme builder issue, this is an issue with the CDN provider. I believe that is godaddy’s CDN. Similar issues are described here and here as well.
If you can add FTP access, I can try a few things to bypass this, but it is very unlikely that I can fix it, as the issue is not created by the plugin. The server is simply not allowing to load the font file due to the CORS policy.