Nostalrius Begins - Quality wow vanilla realm (1.12)

Hello, when I registered many months ago I used one of my random emails and I can't find it anymore.
Since the .account password doesn't work anymore, does that mean that I can not change my password?
Thanks in advance..

ps: is it possible for me to know what email adress I used to register? or even just the first 3 letters or the provider? Thanks

you need the email to change your password and noone will give out any information about the mail address for security reasons