You can update your payment method by logging into your ARENA portal, clicking on My Membership, then the Manage Account Information button.
Under ARENA Membership you should see your plan, a renewal date, and your payment method. Next to the payment method you should see a pencil. Click on the pencil to change or add a payment method.
Alternatively, you can add a credit card by clicking Add Payment method under the Payment Method section and then add your new credit card information.You can also contact us at Contact@goarena.co for help.