So i wanted to troll my friend using this mod, but when i morph into a mob, he still sees me as a player, idk if i need to install something else for the multiplayer to work, or its just the mod that doesnt have the Multiplayer Function.

amazing mod btw 👍
(The server provider i use is Aternos, Fabric 1.20.1 and we both have the mod installed.)

check if you have the mod also installed on the server aternos/mods if yes then everything should work if not (and the mod is installed on the server) then I have absolute no idea. You need the fabric API, identity mod and the Architectury API.

This might be caused if your friend joind after you morphed. Try morphing once he's online (sadly, this is a bug).