No Y-Axis rotation FPS Controller

Hello !

Before all - sorry for my English, I am french.

So, I tried since many hours to create a FPS in multiplayer. I did it with photon, and all work except one thing : the Y-Axis rotation of the players' camera. I can not look up and down, only from left to right.

I searched a lot of time in interet, and I read this : http://answers.unity3d.com/questions/162185/cant-use-the-y-axis-with-my-main-camera.html I have the same trouble but I don't understand why I am supose to do. I tkink it is because I have 2 cameras (the 2 players) I already deleted the main camera.

Thanks a lot !