If your bank has replaced your card and the card number is still the same, you can simply update the "Expiry date" (and "Start date" if required) by clicking on "Modify Card Details" in the card page.
If your card number has changed, you will need firstly to unregister your old card, and then register the new card details by clicking on "Add Card Details".
Please note that you may be required to supply some documentation in order to unregister your old card
BETFAIR®, SHARP MINDS™ and the BETFAIR LOGO are trade marks of The Sporting Exchange Limited.