Oh, not that type of confirmation, I mean, when you register you recieve a confirmation e-mail to the site know that this e-mail address is yours.
Yep, I absolutely do still have that!
With both e-mails(one before and after the confirmation) are a excellent proof that the e-mail is yours to reclaim your account.
Now you just need to contact their support.
A minimum hope in me was saying that in those confirmation e-mails you would find something like
"username: xyz"
"password: mysuperpassword"
