All your payment info can be managed from your profile. Just click the profile icon in the lower right area of the screen and then tap on the gear icon in the top left corner. Select Payment Information to access your payment info. All payment cards you've added should be listed. If you have more than one, you can set the default card that will be used when you initiate a consultation request.
To add a new care, tap on the plus sign in the top right corner.
To remove a card tap on the card and then select "remove card" at the bottom of the screen.
You cannot edit an existing card. If the card number or expiration number has changed, you will need to remove the card and add it again.