RSVPify uses Stripe to process and manage credit card payments. Many Mastercard, Discover, and Visa cards will automatically update to your new card number if your card expires, is lost, or is stolen. For more information, see Smarter Saved Cards on Stripe.
To manually update your card:
In the top-right corner, click your account name.
Select My Account from the dropdown.In the lower-right of the screen, click the Update Credit Card link.
Select Use a new credit card, enter your new card details, and click Update Card.
All future invoices will be charged to your newly-added card.