If its your mother's email, get her to log into it for you.
you would have had to confirm the paypal account on the email adress, so someone has the password.
or knows how to use "I forgot my password"...
It may well help Hampa, if you gave your paypal account name.
He maybe able to trace your payment and key through that.
But then again he might not, i'm not 100% what goes down on his end.