Referral orders lower than 3

functions.php

function custom_user_has_orders($user_email = false){
    $user_id = get_current_user_id();
    if($user_id == 0) {
        if($user_email !== false && $user_email != '') {
            $email_exists = get_posts( array(
                'numberposts' => 1,
                'meta_key'    => '_billing_email',
                'meta_value'  => $user_email,
                'post_type'   => wc_get_order_types(),
                'post_status' => array( 'wc-processing', 'wc-completed' )
            ) );
            return count($email_exists);
        }
        return 0;
    }
    $customer_orders = get_posts( array(
        'numberposts' => 99999,
        'meta_query' => array(
            array(
                'key'    => '_customer_user',
                'value'  => $user_id,
            ),
        ),
        'post_type'   => wc_get_order_types(),
        'post_status' => 'wc-completed',
    ) );

    return count($customer_orders);
}

function gens_limit_number_of_coupons($raf_info,$order,$referrer_id) {
    $has_orders = custom_user_has_orders();
    if($has_orders < 3) {
    	$raf_info = array("info" => "Referral is fine. Coupon will be generated on the order complete.", "generate" => "true", "increase_referrals" => "true", "email_notify" => "false");
    }
    return $raf_info;
}
add_filter( 'gens_raf_order_info', 'gens_limit_number_of_coupons',10,3);