Cannot sign in to Mozilla Thunderbird e-mail. "Forgot username" asks for e-mail address to send a reply to. I have entered an alternate e-mail address, but a response is not received. I have checked the spam log for my ISP and the response is also not there. I am asking this question with a new forum account, so just because I have logged into support and am asking this question does not mean that my e-mail account can be logged into. (I saw a response that said the questioner had logged into support forum so there is no problem logging in. I am pre-empting that response.) Is there an alternate solution other than the e-mail solution which does not work?