3d180dd8_ng_Guide__Adding_fonts_to_a_____Problem
[Solution] Use the Typecheck tool to confirm whether the browser referrer is sent. If it isn't being sent, check for browser extensions which may have turned off or blocked the referrer. ​See also: Firefox isn’t showing the fonts but other browsers are [Problem] 
The browser referer isn't being sent.
Adobe Typekit Help : Troubleshooting Guide: Adding fonts to a...
Problem