I too have been using ShopBack for Cashback with Lazada, Sephora, iherb and even Grab and Uber nowadays. https://www.shopback.sg/community

Been booking my recent flights and hotels with Booking.com and Jetstar via ShopBack. This gave me around $105 cashback just for one family hotel booking! You can sign up here and get $5 https://www.shopback.sg/community