Affiliates by @itthinx - no referral with coupons

add_filter('affiliates_record_referral', 'eggemplo_affiliates_record_referral', 10, 2);

function eggemplo_affiliates_record_referral ($algo, $data) {

    if ( class_exists( 'WC_Order' ) ) {
        $order = new WC_Order();
    } else {
        $order = new woocommerce_order();
    }
    if ( $order->get_order( $data['post_id'] ) ) {
        if( $order->get_used_coupons() ) {
            $coupons_count = count( $order->get_used_coupons() );
            if ( $coupons_count>0 ) {
                return false;
            }
        }
    }
    return $data;
}