Your in-game name: unslainable123

The offenders in-game name: Shadowk1ller2

A description of what rule they broke: I think they were possibly hacking. They said it was lag, but they were moving in air.

Proof:

(If you skip to 0:34 and pause you can see him in the air higher than a player can jump.)

 

I see lag in the video and I believe it was lag you saw.

Closing report, but if you get more evidence feel free to make another report.