Abstract: An apparatus according to the present disclosure may acquire connection information generated based on a resident registration number of the user and order information for an order of the user, may transmit the connection information to a card company server, may acquire first card information of the user determined based on the connection information, the first card information including one or more card replacement numbers, may transmit second card information to a terminal of the user, may acquire information indicating a first card used to pay for the order among one or more cards included in the second card information, may transmit a card replacement number for the first card to the card company server, may acquire approval information for approving payment for the order by the first card, and may pay for the order based on the approval information.