Early Chinese New Year offer at Fave (previously Groupon) - 20% cashback sitewide. Use the promo code 20HUATAH at checkout. Cashback is capped at $10 and will be credited in the form of Fave credits.
Referrals get $3 off first order over $6, referrers get $3 credit for each successful referral.
Just used this on a $40 purchase - sweet :D $8 back!
Don't forget to link GrabPay to get Grab points for paying too.
If GrabPay doesn't appear as an option for payment method, you might need to update your app.