If you go to «Orders» in your account, you’ll see a list what you’ve bought.
This gives you an overview of the status of your payment and delivery.
If you want more specific information, click on the order itself. This takes you to a page where you can view and download PDF documents linked to the order. You can view your order confirmation and, once your parcel has been delivered, your proof of purchase.
The Orders area of your account is also where you can edit any open orders and remove individual items from an open order. Find out more about cancelling an order here.