Plutonium

G00D Bagel you probably had something messing with the anticheat.
https://plutonium.pw/docs/anticheat/#plutonium-cheat-policy
and no, you cannot get unbanned by support. you have to wait out your ban time, and next time when playing (with mod menus/cheats), load the game in LAN mode (the option can be found next to green PLAY button, pressing it will give you PLAY in LAN MODE (anticheat disabled)), which fully disables anticheat, and allows you to inject cheats/unsupported mod menus.