Sitting animations don't work for other players


My friend and I are building a vibe sort of thing for our friend group to relax in, but the animations do not seem to work for other people. When I sit down, the animation is what i made it, but when he sits down it is just the default sitting animation.

Please respond if you have any similar experiences or any fixes for this issue, thanks

The Photos

image (his perspective)

(my perspective)

Do you two have the same animation pack?