I tried to update my Credit card Valid date on the website but failed, it said "Only one card can be registered per account.So we'll save the credit card you've registered for future refills.", but I am using the same card. Please tell me what should I do??
Welcome to the Community.
You should be able to apply these changes directly in My Account when selecting "Charges & Payments".
Can you tell us if you see the option to simply update the expiration date if you are using the same card? Otherwise, can you try clearing the cache and cookies of your browser, removing the card from on file and registering it again?