Since the launch of PocketSmith v2, PDF invoices have not been available for paid-for accounts. Previously, simple invoices were provided for each subscription payment that was made against your account.
These are now available again, and all users will be able to access invoices for each of their payments from the Account Overview page available here: . These include some enhancements as well, such as GST adjustments for New Zealand customers.
You'll also find that the list of payments is now more useful as well, with pagination and sorting abilities available.