it did not work.
First activated the plugin it said: " Oops... WooCommerce Checkout & Account Field Editor requires an access to our API. From unknown reason, the API connectivity test failed. It's probably a temporary issue on our end. Just to be sure, with your permission, would it be o.k to run another connectivity test? "
I ignored that warning and go to settings page but plugin want to connect with freemius.com. There has two option Allow and Skip but when i click skip button it does not back any action.