How to make sure than one script affect the player of the specific client, and not the other

I'm trying to establish a client-client connection in unity for a game, and i'm making the unit movement sincronization, so far i actualy archieve than both (i.e. the one acting like a host and the one connecting to it, as Host and Client respectibly) to sincronize movement, i can see the movement of the first (host) in both, but the problem is client is not moving, it try to move, i see a little movement but then it return instantly to him's place, this is just visible in the Client window, as Host doesn't see this at all.

I mean, when i move with the host, both, Host and Client can see the movement of the host, when i move the Client, the client character make a little movement, and that movement doesn't change the character position (because return to the original instantly) and it is not seen in the screen of host.

So the question is:

Why just one of the clients is receiving the input instruction from both clients?

Is there a way to test this properly?, and how i can fix it? here's the code:

CharacterPlus.cs (The one who make them move when pressed a key)

 using UnityEngine;
 using UnityEngine.Networking;
 using System.Collections;
 
 public class CharacterPlus : NetworkBehaviour {
 
     private Rigidbody2D rb2d;
     float input_x;
     float input_y;
 
     void Start () {
         if (isLocalPlayer) {
             rb2d = this.GetComponent<Rigidbody2D>();
         }
     }
 
     // Update is called once per frame
     void FixedUpdate () {
         input_x = Input.GetAxisRaw ("Horizontal");
         input_y = Input.GetAxisRaw ("Vertical");
 
         if (Input.GetKeyDown (KeyCode.D)||Input.GetKeyDown(KeyCode.RightArrow))
         {
             Move (1f,0.0f);
         }
         if (Input.GetKeyDown(KeyCode.A) || Input.GetKeyDown(KeyCode.LeftArrow))
         {
             Move (-1f,0.0f);
         }
         if (Input.GetKeyDown(KeyCode.W) || Input.GetKeyDown(KeyCode.UpArrow))
         {
             Move (0.0f,1f);
         }
         if (Input.GetKeyDown(KeyCode.S) || Input.GetKeyDown(KeyCode.DownArrow))
         {
             Move (0.0f,-1f);
         }
     }
 
 
 
     void Move(float h,float v){
 
         Vector3 movement = new Vector3 (h,v, 0f);
 
         rb2d.AddForce (movement*70);
         //shadow.transform.position(new Vector3(shadow.transform.x,shadow.transform.y,shadow.transform.y));
     }
 }
 
 

PlayerSetup.css (the one who supposedly must prepare it to avoid this problem to happend)

 using UnityEngine;
 using UnityEngine.Networking;
 
 public class PlayerSetup : NetworkBehaviour {
 
     [SerializeField]
     Behaviour[] componentsToDisable;
 
 
 
     void Start()
     {
         if (!isLocalPlayer) {
             for (int i = 0; i < componentsToDisable.Length; i++) {
                 componentsToDisable [i].enabled = false;
             }
         } else {
             GameObject.Find ("SceneCamera").GetComponent<Camera> ().enabled = false;
             GameObject.Find ("SceneCamera").GetComponent<AudioListener> ().enabled = false;
 
             GameObject.Find ("CameraPlayer").GetComponent<Camera> ().enabled = true;
             GameObject.Find ("CameraPlayer").GetComponent<AudioListener> ().enabled = true;
         }
 
     }
 
     void OnDisable()
     {
         //Maybie, if the player dies, well need to place something 
     }
 }
 

Any Suggestion, constructive comment or question would be much apreciated too.

Thanks in advance