On confirm.php remove lines 3-32. This has nothing to do with you issue, but they aren't needed anymore.
On your email body page you still have mysql code instead of mysqli.
First, add this to the top:
Then you have to update all of the references to: $row_rsConfirm
and update them to MySQLi syntax.
<?php echo $row_rsConfirm['email']?>
<?php echo $rsConfirm->getColumnVal('email')?>
A shortcut, if you want is you could just add this to the top of the page:
$row_rsConfirm = $rsConfirm->Results;
Then you wouldn't have to update the references to $row_rsConfirm on your page.