I'm afraid you need to meet the min. qualifying spend ($500/mth) first before you can collect the additional rebate for shopee..
1Cardmembers who have been awarded the quarterly cashback will get an additional 5% cashback on the total Dairy Farm Singapore such as Cold Storage, Giant, Guardian, 7-Eleven, Marketplace, Jasons, Jasons Deli, Grab (excludes mobile wallet top-ups), Shopee Singapore transactions (excludes ShopeePay) and UOB Travel (excludes online and flight only bookings) transactions successfully charged and posted to the Card Account in each statement month.