You can manage your subscription and update credit card information by going to Account Name>My Account and viewing the Plan & Billing section.
When choosing or changing your subscription, you currently have the choice of either a Monthly subscription at $49/month, or an Annual subscription at $480/year.
To choose or change your subscription, click on the arrows to the right of Your Plan, and select either the Monthly Plan or Yearly Plan from the menu.
Once selected, you can add or update your credit card information by clicking in the Card Number field:
Enter the card number, then enter/modify the Name on Card and Expiration fields as needed.
Enter the CVV number from the back of the card (For AMEX it is the 4 digits on the front of the card) and click Save Plan & Billing Info when finished:
If you have an Active subscription you wish to cancel, please see How to Cancel Your Subscription