Player can't interact certain Rigid Body while another rigid body can.

ok.. i'm pretty new here. i opened many kind of questions and documentations, but no luck. my problems :

○ First : i want my bridge falling down when my player stand on it. but it can't. it's like a solid object. when i put a box rigid body (non-player), it can falling down.

○ Second : i make a spinner. my player can't spin it easily (almost unable). but when my player push a rigid body toward the spinner and collide, the spinner works and spin easily. i use configurable joint.