On the Home screen of the Subscription Management portal (details for accessing your subscription portal can be found here: How To: Manage Your Subscription). From the Crelate Home Page Click on "Settings" and Click on "Change your subscription or update your payment information". Then click on "Invoices"
Once you hit the "Invoices" button you will be taken to your payments/invoices.
On the right side under "Actions" click on "Details" in order to access a more detailed invoice with recent payments and subscription information.
Here, you can see the chargers accrued for that invoice, if the invoice is paid, and historical activity that has happened since the last invoice.