Add the first name and last name of the order to the admin refferals view in the backend
add_filter('affwp_referral_table_reference','sitiweb_add_referral',2,10);
function sitiweb_add_referral($content,$content2){
$order = wc_get_order($content2->reference);
return $content. '<br>(' .$order->get_formatted_billing_full_name().')';
}