Q: Can I change my credit card?
Select "Regular purchase list" on My Page.
Open the Order Details you want to change.
Click the "Change" button for the payment method on the order details screen. 
Click the "Send" button on the Change Payment Method screen.
Click OK. A transmission completion message is displayed.
An email containing payment information will be sent to the registered address.
Note! ) If you do not click the link in the sent email, the payment change will not be completed.
* Image of sent mail
Press the button to confirm the payment information and jump to the credit card change page.
Enter your credit card information.
If you scroll down, you will find a button to update the card, so click it.
Change completed.
At the same time, you will also receive a change completion email.