This article will cover where to locate billing information for your account as well as where to access invoices.
Start by selecting "Account" found in the bottom left corner of your screen.
Next select "Account Settings" > "Billing"
That will bring you to your billing screen where you can view your billing plan, invoices, and payment methods.
To access an individual invoice select the invoice number and a display of the invoice will appear as well as the ability to download a PDF of the invoice.
To access payment information, add a new card to the account, or change the card being billed select "Payment Methods".