Hello. I have two computers (A and B). the hard drive on the B died and i just had a new hard drive installed. i have installed firefox on B. the sync to my A does not work. firefox asks me to sign in. i sign in with my email address and password for B, this is not accepted. i then try signing in with A's password and that is not accepted either. when i check A's settings, it doesnt allow me to add B as a new device. Any help would be appreciated. Thanks