In the client area menu bar, click on the My Details or Card Details link. In the My Details screen, you will see your details, including name, address and phone number. In order for payments to be properly processed, this information must be correct. Please confirm all the details.
The next step is to click on the Change Credit Card Details link in the menu bar. You can update your card information, such as expiration date. You can also add a new card. After making any needed changes, click on the Save Changes button.