Yeah thx, but the signed message could be a problem
But how is this possible, if the password was not changed ? Why i dont receive the password reset mail?
My best guess is that somebody has changed both e-mail and password for that account. I don't know how is that possible, but I think that this is what has happened to you.
And my suggestion is to really think on finding a way to provide a signed message...
Edit: although I've made a check and indeed I've got mails for both e-mail and password change, at some point in the past I remember I didn't get those e-mails, but I don't remember the exact settings had and what I did.