Under Settings > Billing Profile you can add, remove, or change your modules and subscription level. You can also enter your billing information and view past invoices.
The subscription tab displays your current package, as well as all modules.
The account activity tab will show an itemization of all billings, as well as printable PDFs of each billing.
The edit billing details button allows for your credit card to be updated.
The + Add Modules button allows for optional modules to be added or removed.
The cancel button will start the process of account cancellation.