I mentioned in a previous post that the Boost App doesn't support credit cards even though the option is there.
Today, I tried the app again, and now increasing your balance using credit cards is now supported.
So now, if want to buy that Dunkin Donuts iced coffee (so good that my urine smells like coffee), I get the best of 2 worlds: I get credit card points and get cashbacks (so far RM1/transaction is the very limited trend) for every transaction I make.