Once you activate your licence on an installation, you will then have access to print a PDF version of your invoice. I will use WooThumbs as example (other plugins are the same, but the setting page URL is different).
- Go to the plugin’s settings page. In this example: WooCommerce > WooThumbs.
- Click Manage Licence & Billing.
- All of your payments will be listed here. Just click Invoice to generate a PDF invoice of the transaction.