To redeem a reward with your Linkpoints, simply:
1) Select the reward you would like to redeem
2) Tap on the ‘Redeem now’ button
3) Tap on 'Redeem' to confirm the redemption
4) Choose to use the reward now or later (redeemed rewards are stored in Rewards > ‘Vouchers’, under the 'Use now' tab)
View all FAQs regarding Rewards on the FairPrice app here.