Hi, just got a new credit card (only thing changed with the expiration date and the 3-digit security code) and tried updating the card online. It didn’t work 
Said something about this type of subscription cannot be update (or something like that… sorry, I had my 2 year old all over me and didn’t get a clear look).
Thanks,
Nhat
The next time your payment is due a new invoice will be generated. When it does, you will be able to pay that invoice with your new credit card information and it will be saved for future payments as well.
You can see what date your next payment is due by looking at your account page under “My Subscriptions” you can see when the “Next Payment” is.