IMG does not store or have access to your payment information. Your membership is billed by third party payment processors and the status of your subscription is sent to IMG to provide access to our websites.
If you have an issue with your payment method and your membership is billed by one of the following vendors, you can login to your account at their website and update your payment information:
Epoch click here
Vendo click here
Otherwise, you can signup for a new membership with your new payment method.