Login to your client area. Once logged in, click on Billing -> My invoices on the client area menu. This will display every paid and unpaid invoice you have generated with us.
Click on the invoice you want to take any of the above actions (view, print or download). In order to print, click the print button located at the bottom right of the invoice you are viewing. Beside the print button is also the download button. You can download a pdf version of the invoice to your system.