Platform Effector 2D with rigidbody2D

Now I have searched all over and I can't seem to find a solution to this problem. I am currently working on a two player platformer game and I am using the platform effector 2D component to ensure that the players don't get stuck to walls. However I encountered a problem when I put a platform effector 2D on the players in hopes that they would collide, but wouldn't stick together, however as soon as I hit play the players immediately fell through the floor. I have reason to believe that this happens due to a problem with the rigidbody2d, but I can't be certain. I have also made sure that the collider mask is set so they should be colliding. Any answer would really help because I have had to stop all development of my game to try to fix this problem.

(use one way is not checked)