Photon Instantiated player prefab doesn't move On Pointer Down

Hello

I have two buttons for UP and DOWN, and on that buttons I have an Event Trigger for On Pointer Down and On Pointer UP.

In single player game I have the player in the scene, it doesn't get Instantiated and I can move the player UP and DOWN.

But in multi player game I have player as a PREFAB, that gets Instantiated when he joins a room, but then the player doesn't move with this touch buttons UP and DOWN.

Must I do something else with player prefab, so it will get control from the two buttons?

Thank you very much