From the web dashboard, click on the My Account dropdown menu and select Invoices.
Once there, Clicking here and you will be redirected to the billing portal, where you can view your account's billing information.
Scroll down to the bottom of the page to find the list of invoices associated with your account. You can download each invoice by clicking on it.
In the next pop-up window, click on Download invoice to get your invoice in PDF format.