Banned from server due to big shadow under player.

my friend banned on server for "hitboxes" but he didnt use ANYTHING only legit minecrraft client called "flarial" he banned for "big shadows under player" heres reason -

"You were banned by CaptainMichifus at Jul 18, 2024, 3:57:56 AM UTC for use of not allowed modifications (HB) <https://www.youtube.com/watch?v=UW5eY2fAcXo>"

also OUR proof of its not hitboxes cheat

https://youtu.be/pfuY_esnOjw big shadows
https://youtu.be/-27WwWJ3KPs small shadows after update from 1.20.81.1 to new version
https://youtu.be/-60o9VGDI1Y and my video about this situation

also a few ppl in comments video report say that they have same issue but owner of channel deelete this comments.

we really need your help and know why its happend and how to get it back for showing to moderator that isnt cheating.

thanks