You can check your registered credit card information from "Automatic Renew" of [My Page].
Please cancel the automatic renew by clicking "Click here for automatic renew cancellation" displayed on the same page by the end of the membership renew period (three months before the membership expiration).
After that, please register a new credit card number again from "Automatic Renew".
For changes within the membership renew period (within three months of the membership expiration date), only cancellations can be made.
After the cancellation, you need to renew membership by yourself. Please note that it is not automatic renew.