Enque Typekit Fonts – Not Found

As mentioned in the comments, your code snippet is working fine. Nevertheless the font kit has to be published within the Kit Editor:

  1. Login to your Typekit account
  2. Locate the Kit Editor (see: https://typekit.com/kit_editor/kits/xxxxxxx)
  3. Click the Publish button (bottom right)

You may also consider using the new embed code provided by Typekit:

<script>try{Typekit.load({ async: true });}catch(e){}</script>