You can preview and download invoices in Prowly. To do so, just click on the your profile name. This will roll out a list with your profile options:
Choose Payments - this is where all the information about finances and your company are located. On the very bottom, you can see Billing history and all payments done for the chosen subscription plan. Next to invoices you can verify their issue date, the status of the payment, the title and the invoice charge sum. Every invoice can be also downloaded with the arrow icon.