Cannot join Internet Match

Hi, i created a simple Unity matchmaking project (see the link at the end for the complete project) in which player is instantiated and their respective names are shown above their gameObjets. The problem is when i create the match it works fine and loads the scene, instantiates the player from prefab, shows the name Everything is looking good. But when on another build i join the same match First of all it takes too long and then simply disconnects and fails to join the match and thows the following error:

MatchMakingClient DropConnection :https://mm.unet.unity3d.com/json/reply/DropConnectionRequest UnityEngine.Networking.NetworkIdentity:UNetStaticUpdate()

followed by:

ClientDisconnected due to error: Timeout UnityEngine.Networking.NetworkIdentity:UNetStaticUpdate()

and when i again try to find the match there is no match The match just disappears but on the other build everything is still good !!!????.

I am using Unity 5.5.0f3

Here is the Link to the project: http://www25.zippyshare.com/v/itzvxmq6/file.html

This is the player script:

Player.cs

 using UnityEngine;
 using System.Collections;
 using UnityEngine.UI;
 using UnityEngine.Networking;
 
 [System.Serializable]
 public class PlayerData
 {
     public string myName;
     public GameObject myObject;
 
     public PlayerData(string n, GameObject g)
     {
         myName = n;
         myObject = g;
     }
 
     public PlayerData()
     {
 
     }
 }
 
 public class Player : NetworkBehaviour {
 
     private PlayerSetup playerSetup;
 
     [SerializeField]
     private GameObject myCanvas;
 
     [SyncVar]
     public string myName = "PLAYER";
 
     [SerializeField]
     Text nameText;
 
     [SerializeField]
     private float speed = 2f;
 
     [SerializeField]
     RectTransform myTransform;
 
     [SerializeField]
     private GameManager gameManager;
 
     PlayerData myData;
 
     void Start()
     {
         myCanvas = GameObject.FindGameObjectWithTag("PlayerCanvas");
         gameManager = FindObjectOfType<GameManager>();
 
         if (isLocalPlayer)
         {
             playerSetup = FindObjectOfType<PlayerSetup>();
             myData = new PlayerData(playerSetup.playerName, gameObject);
             CmdPlayerHasJoined(myData);
             GetComponent<Image>().color = Color.blue;
             nameText.color = Color.green;
         }
         else
             nameText.color = Color.red;
 
         nameText.text = myName;
 
         transform.SetParent(myCanvas.transform);
     }
 
     [Command]
     public void CmdPlayerHasJoined(PlayerData myData)
     {
         RpcPlayerHasJoined(myData);
         gameManager.players.Add(this);
         gameManager.playersName.Add(myName);
     }
 
     [ClientRpc]
     public void RpcPlayerHasJoined(PlayerData myDataa)
     {
         myName = myDataa.myName;
         nameText.text = myName;
         gameManager.players.Add(this);
         gameManager.playersName.Add(myName);
     }
 
     void Update()
     {
         if (!isLocalPlayer)
             return;
 
         Vector2 move = new Vector2(Input.GetAxis("Horizontal"), Input.GetAxis("Vertical"));
         myTransform.Translate(move * speed * Time.deltaTime);
     }
 
 }
 

This is the player setup script:

PlayerSetup.cs

 using UnityEngine;
 using UnityEngine.UI;
 
 public class PlayerSetup : MonoBehaviour {
 
     public static PlayerSetup instance;
 
     public string playerName = "PLAYER";
     [SerializeField]
     private Text playerNameInput;
     [SerializeField]
     private GameObject networkHud;
 
     void OnLevelWasLoaded()
     {
         if(UnityEngine.SceneManagement.SceneManager.GetActiveScene().name == "Menu")
         {
             Button setButton = GameObject.Find("SetButton").GetComponent<Button>();
             setButton.onClick.AddListener(SetPlayerName);
             setButton.onClick.AddListener(SetPlayerName);
 
             playerNameInput = GameObject.Find("PlayerNameText").GetComponent<Text>();
             networkHud = GameObject.Find("NetworkManager");
         }
     }
 
     void Awake()
     {
         if (instance == null)
         {
             DontDestroyOnLoad(this);
             instance = this;
         }
         else
             Destroy(gameObject);
     }
 
     public void SetPlayerName () {
         playerName = playerNameInput.text;
         networkHud.SetActive(true);
     }
     
 }