Why is my Skinned Mesh Starter Character not moving?

I am trying to make my skinned mesh character move but it simply isn’t.
I followed multiple youtube tutorials but it hasn’t fixed this issue.

Here is the rig/model:

rig.rbxm (73.2 KB)

Even if I change the hip height a lot it doesn’t work…
Any help is appreciated thx.

Fixed by welding the mesh to the humanoid root part