Which credit card earns 4mpd for FairPrice app payments ?

Hey guys, Anyone know if I get 4mpd for FairPrice in-app payments using Citi rewards card or DBS WWMC (or any other card) ? In other words, trying to see if the in-app payments get treated as online groceries. More specifically I am trying to figure out what are my options to earn 4mpd while using Scan & Go on Fairprice App while shopping in store (without using an UOB card) :)