Can someone please assist me with this issue?

My guess: There is a handle or something that has been tagged so another behavior has taken over control of that point (so it does not move). If you click a button in the bottom left corner of the scene view, it draws a yellow mesh of triangles. That can help you identify where the stuck point on the artwork is. Then check for any handles or origins at that location, and check what tags have been assigned (in properties panel).

Or do what i do and delete parts of the character and retry. If it starts working, use undo to put it all back, but hopefully you narrow down which thing made it go funny.