Rig not moving the correct parts

Hello, I am trying to rig a model of a character from a horror game (I’m also trying to make the rig like dummy rigs since I don’t have a lot of rig experience) and I am using the rig edit plugin. When I try to animate the uppertorso, the uppertorso stays in place and the lower torso + legs move instead, and when I try to move them, they move in the opposite direction. I can move individual parts of the head, arms, legs, etc, but I can’t move either of the torsos using their correct parts. When I try to move the lower torso, nothing happens. It would be too much to add the hierarchy so I will be including a video, screenshots, link to the package I made, and an rbxm file. Also, I have tried moving the joints around (from HumanoidRootPart to the other torsos) but have had no luck.
Joints:

Welds:

Video:
robloxapp-20240625-1250337.wmv (1.5 MB)
Link:

Rbxm:
rig.rbxm (4.0 MB)
Sorry if this is a lot, I know I’m not very experienced. Thank you for your help!