Your store should be running on Magento Community Edition version 2.0.0 and more.

Configuration

Navigate to Store > Configuration > Pin Product Option to set up the extension.

• Order Item Status to Enable Downloads: Select the order status to send the pin via email. You can choose: on hold, pending, complete but we recommend on hold if you want to test running the module.
• Disable Guest Checkout if Cart Contains PIN Items: No if you want only your customers check out with license products. Yes if you want both customers and guests can check out with license products
• Email Template to notify the PINs: select the email template to send to customers
• Email Sender: select the email sender 

Managing PIN products

Creating a PIN product and upload codes

Navigate to Product > Catalog to see available products. If you want to create a new product, Click on Add Product, the product should be of type virtual.