Legs Don't Move On Quest But Do On PC

So, basically my friend had bought a VRChat ready avatar for the two of us to use, and they’re the PC user while I’m the Quest 2 user. The avatar’s legs only move for them while they stay completely still on my screen. Neither of us have any clue as to why it’s doing this or how to fix it and looking it up only shows people saying their FBT isn’t working so it lead to a dead end

take a screenshot on the locolmotion panel,the override, and the controllers.

So it now doesn’t work for either of us, and none of us have any idea what those are. Can you explain where to find them for me?