Fedora Project Avatar

I was going to change my fedora project avatar. I found a place to do it on my Badges page (https://badges.fedoraproject.org/user/tablepc), but when I click the "Change Avatar" I get a 403 error (You are seeing this message because this HTTPS site requires a 'Referer header'). I've tried using a freshly load copy of Firefox and I it tried using the Otter browser where turning on Referrer is more obvious and I always got the same error. Does anyone know if this is really a browser setting issue or is it something else? Have a Great Day! Pat (tablepc)