How do I get the Payzone WooCommerce payment gateway plugin to show up in the settings? [closed]

As Rustom mentioned, the plugin isn’t checking if this Multisite is activated – you can add a check in for multisite, add the below in the plugin registration file, just below the existing active check functions.

 if(!function_exists('is_plugin_active_for_network')){
        require_once(ABSPATH .'/wp-admin/includes/plugin.php');
            if(is_multisite() && 
    is_plugin_active_for_network('woocommerce/woocommerce.php')){//check if multisite and check 
           /** add in the functions from inside the current active check. **/
        }
    }