For those who don't know, Good Food gift cards only works with MCC 5812 and MCC 5813, but not MCC 5814.
There are a few restaurants that Good Food gift cards used to work but have been declining my payment since new year.
I checked the transaction record. The terminal category of the transactions changed from 5812 in Dec to 5814 in Jan. But I don't see any change in the physical EFTPOS devices that the merchants use.
So it might be a system upgrade of the EFTPOS devices or Good Food gift cards can change the category of devices as they wish and customers can't do anything about it.
believable because they actively hate you