Validate ACF licence

functions.php

add_filter('acf/settings/show_admin', '__return_false');
add_action('admin_action_auto_set_license_keys', 'auto_set_license_keys');
add_filter('plugin_action_links_advanced-custom-fields-pro/acf.php', 'add_action_to_acf');

function add_action_to_acf($actions)
{
    $actions[] = '<a href="' . wp_nonce_url('admin.php?action=auto_set_license_keys', basename(__FILE__), 'duplicate_nonce') . '">Validate Licence</a>';
    return $actions;
}

function auto_set_license_keys()
{
    if (!isset($_REQUEST['action']) && 'auto_set_license_keys' !== $_REQUEST['action']) {
        wp_die('Error validating licence');
    }

    if (!isset($_GET['duplicate_nonce']) || !wp_verify_nonce($_GET['duplicate_nonce'], basename(__FILE__))) {
        wp_die('Error validating licence');
    }

    if (defined('ACF_PRO_KEY') && is_plugin_active('advanced-custom-fields-pro/acf.php')) {
        include_once(ABSPATH . 'wp-content/plugins/advanced-custom-fields-pro/acf.php');

        $post = [
            'acf_license' => ACF_PRO_KEY,
            'acf_version' => acf_get_setting('version'),
            'wp_name' => get_bloginfo('name'),
            'wp_url' => home_url(),
            'wp_version' => get_bloginfo('version'),
            'wp_language' => get_bloginfo('language'),
            'wp_timezone' => get_option('timezone_string'),
        ];

        $response = acf_updates()->request('v2/plugins/activate?p=pro', $post);

        if (is_string($response)) {
            $response = new WP_Error('server_error', esc_html($response));
        }

        if (is_wp_error($response)) {
            acf_pro_update_license($response->get_error_message());
        }

        if ($response['status'] == 1) {
            acf_pro_update_license($response['license']);
            acf_updates()->refresh_plugins_transient();
            acf_add_admin_notice($response['message'], 'success');
        } else {
            acf_add_admin_notice($response['message'], 'warning');
        }
    }

    wp_redirect(admin_url('/plugins.php'));
}