Hey @dmitric, this plugin doesn’t charge and is free to use. However if you’re taking a lot of orders it becomes a time sap to keep checking your Ether wallet.
The pro version allows you to subscribe to our service that checks watches for transactions and updates your WooCommerce orders that the payment has gone through. There is a timeout of 50 minutes, so if the user hasn’t paid by then it restocks your site and marks the payment as failed.
If you have any other questions please feel free to fire them over and I’ll do my best to help.
Thanks