Why do I need to link my card?

Our referral system works differently from traditional ones with coupon codes or links. Once your cards are connected, we track your purchases and automatically send you cash rewards for referrals.
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Linking at least one card is necessary for verifying purchases, rewarding you, and ensuring secure transactions. Connect your most-used cards to earn rewards when you shop with our merchants.

For more on security, please read:
'How is my card secure with btwn?'