in the webassist/plugins/shopping_cart/process_transaction.php file, change lines 513 - 516:
if($NeedInsert || $updateFieldValue === "") {
        $_SESSION['randomConfirm'] = $userVerificationCode;
        $RecipientEmail = "".((isset($_POST["email"]))?$_POST["email"]:"")  ."";include("../../../WA_Universal_Email/WAUE_users_Registration_1.php");
    }
to:
if($NeedInsert || $updateFieldValue === "") {
        $_SESSION['randomConfirm'] = $userVerificationCode;
        $row_WAATKusers['UserID'] = $_SESSION['UserID'];
        $row_WAATKusers['UserVerificationCode'] = $userVerificationCode;
        $RecipientEmail = "".((isset($_POST["email"]))?$_POST["email"]:"")  ."";include("../../../WA_Universal_Email/WAUE_users_Registration_1.php");
    }

