Woocommerce OpenPos + WooCommerce TM Extra Product Options (4.9.9) For select , text, radio, checkbox type

this addon made base on 

/**
 * Plugin Name: WooCommerce TM Extra Product Options
 * Plugin URI: https://epo.themecomplete.com/
 * Description: A WooCommerce plugin for adding extra product options.
 * Author: themeComplete
 * Author URI: https://themecomplete.com/
 *
 * Version: 4.9.9
 *
 * Requires at least: 4.4
 * Tested up to: 5.2
 *
 * WC requires at least: 2.6
 * WC tested up to: 3.7
 *
 * @package  WooCommerce TM Extra Product Options
 * @category Core
 * @author   themecomplete
 */