I installed Firefox Beta on Nexus 7, tried to log-in will not allow me to says the username/ E-mail already in use    Duh!   but I cannot log-in or register with my E-mail Why?
I set-up a sync account a couple of years ago but have not be using but I still have the account info, Have not tried because I cannot sign-in to firefox.  Help not sure where to look for a reply, E-mal address is johnmassengill@gmail.com

I have a Firefox account on my computer using Windows 7, I have a username/password with a gmail E-mail address. I installed Firefox Beta on Nexus 7, tried to log-in will not allow me to says the username/ E-mail already in use Duh! but I cannot log-in or register with my E-mail Why? I set-up a sync account a couple of years ago but have not be using but I still have the account info, Have not tried because I cannot sign-in to firefox. Help not sure where to look for a reply, E-mal address is johnmassengill@gmail.com