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 :frowning:

So, on of the problems is that you don’t even define this “instance” thing, you can just try removing it