I also had this issue with Fairprice order.
I called the Fairprice hotline and sent in a online enquiry. The hotline person was apologetic, and he can't confirm when the phone will arrive.
My guess is that my Moonstone Pixel Pro 10 is out of stock, as when I placed the order last Sat, SingTel online store OOS, and Fairprice had the stock for Moonstone and the free cover.
Let's hope the phone will arrive by Friday. Otherwise I may cancel the order and go back to iPhone 17 Pro
553pm update: Check the Ninjavan tracking, it now shows phone is picked up at 5:07pm, and will be delivered by 10pm tonight. Let's see.