Here's how to download an invoice from a product you've purchased:
First, log into your customer account through the site you purchased the products from.
After you've logged in, click on your profile picture at the top right and select Settings.
Scroll down until you find the Billing section.
Click on View next to the Invoices option. Both free and paid invoices will show up.
Click on PDF to download it to your computer or click on the item name to view it from your browser.
FAQ
Can I adjust the invoice from my purchased product to show additional information, or change existing information?
Can I adjust the invoice from my purchased product to show additional information, or change existing information?
It's not possible to edit the invoice through your customer account after the sale. We would recommend reaching out directly to the site owner to ask if they can manually create a custom invoice for you.