You can connect your card by clicking on the Settings button in your profile, where the Cards button is located. You can link any type of card, but some vendors only accept VISA card to reward referral fees. You can read the following FAQ page to learn more about accepted type of cards to earn referral rewards: What type of payments do online vendors reward? and What type of payments do offline vendors reward?
Once your card is successfully linked, you can start making referrals to your friends about businesses you love. Keep in mind that you’ll need to make a purchase using the cards linked on the app, in order for us to send you cash rewards.