If you got a new credit card or recently moved, updating your billing info is easy!
Log in and click either the Shmoop Logo or your Username.
On the "My Home" page click on the arrow next to your username and click on "account."
Click on the tab that says BILLING (right next to MY ACCOUNT).
Click on the button that says UPDATE (toward the bottom of the page next to "Billing Information.”)
Change whatever info needs changing, and click “UPDATE BILLING INFO.”
You’ll see a success message confirming your change.