Documentation - Product Variations

So I bought your documentation yesterday and still have not received it. Why is there a delay? Its a digital download not a shippable product. I am stuck and cant figure out why my products don't have a add to cart button. Product entry is not intuitive. Are product variants mandatory?

The order confirmation email was sent to you with download instructions.

Login to your account (https://www.nopcommerce.com/account.aspx), then go to your "My downloadable products" tab. You'll see "Download" link beside "nopCommerce User Guide" product. Click it to download the User Guide.

Never got the notification but thanks!