All orders are in the Orders list.
Click on an Order to see the Order details.
For all orders payed by Card you will under Documents find your Tax Invoice/Receipt.
In case any of the campaigns under-delivered, you will find the credited amount under Transactions and the corresponding Credit Note under Documents.
You can click the Download icon to download the attached PDF to your hard drive.
Click the View icon to see a preview or print the attached PDF.
Under Transactions you will see all payment transactions for an order: