This is a symptom of an unfortunately very common reaction to system security. Unless businesses are actively encouraging bug hunting, almost unbelievably they will act with a lot of hostility to exposure of weaknesses in their systems and will often shoot the messenger with extreme prejudice, even if they receive the information privately.
There are countless examples of people getting burned rather than rewarded or even thanked for bringing to attention some sort of flaw. My advice is do not bother. There is almost no upside for you and likely very significant downsides.
There are countless examples of people getting burned rather than rewarded or even thanked for bringing to attention some sort of flaw. My advice is do not bother. There is almost no upside for you and likely very significant downsides.