@SpeedierJam1135 most likely because it is a delicate situation.
If things appear to be in order from the structural side, the only response would be "the boost is confirmed to be working properly!" which would be like a giant slap in the face for people who have the perception it is messed up.
If they say it is being investigated, you will have a rush of people suddenly saying that spent money on something that doesn't do anything.
So in situations like that, sometimes it is best to investigate privately until there is no shadow of a doubt that there is a fault before making a statement.
Alternatively, a statement saying it works could be seen as "The GM said I should get better drops and I haven't, so I want a refund"! Not really a good way to approach it until there is a confirmed issue.