We used to have something similar to this. The reason it was removed, as Aimee said, was that staff was getting spammed. I personally don't mind being spammed if it means getting my attention to ban a hacker or mute a troll.
However, people will say "THERE IS A HACKER IN MY SKYWARS GAME," which staff cannot join if the game is in progress. This means we would have to figure out what lobby that player is in, stalk them, and (assuming the message isn't lying) watch for the supposed hacks.
There lies another problem; people will get salty about losing a game, cry hacks, and bother a staffer about it. We do not have time enough to deal with real hackers and fake accusations all at once, and the bulk of messages are either fake accusations or "hi admin giv me rank pls"