Sorry for the problem. To help us find and fix the problem, can you let us know exactly what happens when you try to sign in to that web site? You could '''[https://wiki.mozilla.org/Mobile/Platforms/Android#Download_Aurora try a test version of our next release]''' to see if the problem has been fixed already. Or you can go to the following link with your phone's browser to download our previous version - but please be careful because the old version contains security holes that are fixed in the latest update: http://ftp.mozilla.org/pub/mozilla.org/mobile/releases/4.0.1/android-r7/multi/