This is not a feature that can be turned on or off. When you are reported by other players, your game will experience a momentary fps drop. This way you can understand when other players are reporting you and change your playing style. In the past, a warning screen appeared in the upper left corner, but since the game has changed its operation, this screen does not appear but, you may realize that you have been reported because your game momentarily fps drop. As far as I know, this feature has been available since the first version of Mega. This feature is very important for users playing legit.
What he means by "Panel" is whether this feature is a feature that can be turned on and off from the UI, like other features. I answered this to him.