I can't connect please help me :(

Hello guys i make new menu , multiplayer script menu script here : using UnityEngine; using System.Collections;

public class MenuManager : MonoBehaviour { public string CurrentMenu;

 public string MatchName = "";
 public string MatchPassword = "";
 public int MatchMaxPlayers = 32;

 private Vector2 ScrollLobby = Vector2.zero;
 
 void Start ()
 {
     CurrentMenu = "Main";
     MatchName = "TestServer " + Random.Range (0, 5000); 
 }
 
 void OnGUI ()
 {
     if (CurrentMenu == "Main")
         Menu_Main();
     if (CurrentMenu == "Lobby")
         Menu_Lobby();
     if (CurrentMenu == "Play")
         Menu_Play();
     if (CurrentMenu == "Host")
         Menu_HostGame();
     if (CurrentMenu == "Browser")
         Menu_Browser();
 }
 
 public void NavigateTo(string nextmenu)
 {
     CurrentMenu = nextmenu;
 }
 
 private void Menu_Main()
 {
     if (GUI.Button (new Rect (10, 10, 200, 50), "Play"))
     {
         NavigateTo("Play");
     }
     if (GUI.Button (new Rect (10, 70, 200, 50), "Options"));
     if (GUI.Button (new Rect (10, 130, 200, 50), "Quit"));
     
 }
 
 private void Menu_Play()
 {
     if (GUI.Button (new Rect (10, 10, 200, 50), "SinglePlayer"));
     if (GUI.Button (new Rect (10, 70, 200, 50), "Multiplayer")) 
     {
         NavigateTo("Host");
     }
     if (GUI.Button (new Rect (10, 130, 200, 50), "Back")) 
     {
         NavigateTo("Main");
     }
     GUI.Label (new Rect (220, 10, 150, 50), "Player Name:");
     MultiplayerManager.instance.PlayerName = GUI.TextField (new Rect (330, 10, 200, 20), MultiplayerManager.instance.PlayerName);
     if (GUI.Button (new Rect (220, 40, 200, 50), "Save Player Name")) 
     {
         PlayerPrefs.SetString("PlayerName", MultiplayerManager.instance.PlayerName);
     }
 }
 
 private void Menu_HostGame()
 {
     //Buttons Host Game
     if (GUI.Button(new Rect(10, 130, 200, 50), "Back"))
     {
         NavigateTo("Play");
     }
     if (GUI.Button (new Rect (10, 70, 200, 50), "Server Browser"))
     {
         NavigateTo("Browser");
     }
     if (GUI.Button (new Rect (10, 10, 200, 50), "Start Server"))
     {
         MultiplayerManager.instance.StartServer(MatchName, MatchPassword, MatchMaxPlayers);
     }
     
     GUI.Label (new Rect (220, 10, 150, 50), "Match Name :");
     MatchName = GUI.TextField (new Rect (330, 10, 200, 20), MatchName);
     
     GUI.Label (new Rect (220, 50, 150, 50), "Match Password :");
     MatchPassword = GUI.PasswordField (new Rect (330, 50, 200, 20), MatchPassword, '*'); 
     
     GUI.Label (new Rect (220, 90, 150, 50), "Match MaxPlayers :");
     GUI.Label (new Rect (340, 90, 250, 100), MatchMaxPlayers.ToString()); 
     MatchMaxPlayers = Mathf.Clamp(MatchMaxPlayers, 2, 32);
     
     if (GUI.Button (new Rect (365, 90, 25, 25), "+"))
         MatchMaxPlayers += 2;
     if (GUI.Button (new Rect (390, 90, 25, 25), "-"))
         MatchMaxPlayers -= 2;
     
     
 }

 private void Menu_Lobby()
 {
     ScrollLobby = GUILayout.BeginScrollView(ScrollLobby, GUILayout.MaxWidth(200));

     foreach(MPPlayer pl in MultiplayerManager.instance.PlayerList)
     {
         GUILayout.Box(pl.PlayerName);
     }

     GUILayout.EndScrollView();

 }

 private void Menu_Browser() 
 {
     if (GUI.Button(new Rect(10, 70, 200, 50), "Back"))
     {
         NavigateTo("Host");
     }

     if (GUI.Button(new Rect(10, 10, 200, 50), "Refresh"))
     {
         MasterServer.RequestHostList("DeathMatch");
     }

     GUILayout.BeginArea(new Rect(Screen.width - 400, 0, 400, Screen.height), "Server List", "Box");
     GUILayout.Space (20);
     foreach (HostData match in MasterServer.PollHostList()) 
     {
         GUILayout.BeginHorizontal("Box");

         GUILayout.Label(match.gameName);
         if (GUILayout.Button("Connect")) 
         {
             Network.Connect(match);
         }

         GUILayout.EndHorizontal();
     }

     GUILayout.EndArea ();
 }

 void OnServerInitialized()
 {
     NavigateTo ("Lobby");
 }
 
 void OnConnectToServer()
 {
     NavigateTo ("Lobby");
 }

} MULTIPLAYER SCRIPT: using UnityEngine; using System.Collections; using System.Collections.Generic;

public class MultiplayerManager : MonoBehaviour { public static MultiplayerManager instance;

 public string PlayerName;
 
 private string MatchName = "";
 private string MatchPassword = "";
 private int MatchMaxUsers = 32;
 
 public List<MPPlayer> PlayerList = new List<MPPlayer>();
 
 void Start()
 {
     instance = this;
     PlayerName = PlayerPrefs.GetString ("PlayerName"); 
 }
 
 public void StartServer(string servername, string serverpassword, int maxusers)
 {
     MatchName = servername;
     MatchPassword = serverpassword;
     MatchMaxUsers = maxusers;
     Network.InitializeServer(MatchMaxUsers, 2550, false);
     MasterServer.RegisterHost ("DeathMatch", MatchName, "");
     //Network.InitializeSecurity();
 }
 
 void OnServerInitialized()
 {
     Server_PlayerJoinRequest(PlayerName, Network.player);
 }
 
 void OnConnectToServer()
 {
     networkView.RPC ("Server_PlayerJoinRequest", RPCMode.Server, PlayerName, Network.player);
 }
 
 void OnPlayerDisconnected(NetworkPlayer id)
 {
     networkView.RPC ("Client_RemovePlayer", RPCMode.All, id);
 }
 
 [RPC]
 void Server_PlayerJoinRequest(string playername, NetworkPlayer view)
 {
     networkView.RPC ("Client_AddPlayerToList", RPCMode.All, playername, view);
 }
 
 [RPC]
 void Client_AddPlayerToList(string playername, NetworkPlayer view)
 {
     MPPlayer tempplayer = new MPPlayer();
     tempplayer.PlayerName = playername;
     tempplayer.PlayerNetwork = view;
     PlayerList.Add(tempplayer);
 }
 
 [RPC]
 void Client_RemovePlayer(NetworkPlayer view)
 {
     MPPlayer temppl = null;
     foreach(MPPlayer pl in PlayerList)
     {
         if(pl.PlayerNetwork == view)
         {
             temppl = pl; 
         }
     }
     if(temppl != null)
     {
         PlayerList.Remove(temppl);
     }
 }

}

 public class MPPlayer
 {
     public string PlayerName = "";
     public NetworkPlayer PlayerNetwork;
 }

and the problem = i can't connect the server i click connect and not working please help sorry my english :(