I have had to use Facebook connect to be logged in because my password does not work, I have not received the email to reset it @ yahoo and can't change emails without the password.
I've sent a test email to a Yahoo email address I have access to, and I successfully received the email - with the caveat that it was in my spam folder.
Have you checked your spam folder?
Please try adding dbtech theAtSymbol dragonbyte-tech.com to your contact list then try the Lost Password form again