The violation stated in the ban link was the use of a modified client, or in other words, godmode.
This ban wasn’t made off of pure speculation; I sat down and watched you walk through a number of mobs and take zero damage or knockback. While I didn’t sit down for anything comparable to hours, being reported for such a reason in itself says that the reporter very likely saw multiple cases of this(your character remaining completely ignorant to the said damage and knockback) throughout the entire time they shared a lobby with you. There’s also the additional fact that this is a common trait found within’ multiple people who’ve been banned for using the same hacks, despite not appearing to have a single shred of lag/connection issues, along with the almost ‘uncaring’ way of playing and ignoring the existence of mobs as a whole.