Can't see each other in multiplayer

Hey there. I have a problem with my unity game, I can connect to my friend, he can connect to Me, but we can't see each other. Any help?

That's my multiplayer script:

 using UnityEngine;
 using System.Collections;
 using System;
  
 public class MPBase : MonoBehaviour 
 {
  
     public string connectToIp = "127.0.0.1";
     public int connectPort = 25000;
     public bool useNAT = false;
     public string ipaddress = "";
     public string port = "";
  
     string playerName = "<NAME ME>";
  
     void OnGUI()
     {
         if (Network.peerType == NetworkPeerType.Disconnected)
         {
             if (GUILayout.Button("Connect"))
             {
                 if (playerName != "<NAME ME>")
                 {
                     Network.useNat = useNAT;
                     Network.Connect(connectToIp, connectPort);
                     PlayerPrefs.SetString("playerName", playerName);
                 }
             }
  
         if (GUILayout.Button("Start Server"))
         {
             if (playerName != "<NAME ME>")
             {
                 Network.useNat = useNAT;
                 Network.InitializeServer(32, connectPort);
  
                 foreach (GameObject go in FindObjectsOfType(typeof(GameObject)))
                 {
                     go.SendMessage("OnNetworkLoadedLevel", SendMessageOptions.DontRequireReceiver);
                 }
                 PlayerPrefs.SetString("playerName", playerName);
             }
         }
             playerName = GUILayout.TextField(playerName);
             connectToIp = GUILayout.TextField(connectToIp);
             connectPort = Convert.ToInt32(GUILayout.TextField(connectPort.ToString()));
         }
         else
         {
             if (Network.peerType == NetworkPeerType.Connecting) GUILayout.Label("Connect Status : Connecting");
             else if (Network.peerType == NetworkPeerType.Client)
             {
                 GUILayout.Label("Connection Status : Client!");
                 GUILayout.Label("Ping to Server: " + Network.GetAveragePing(Network.connections[0]));
             }
  
             else if (Network.peerType == NetworkPeerType.Server)
             {
                 GUILayout.Label("Connection Status : Server!");
                 GUILayout.Label("Connections: " + Network.connections.Length);
                 if (Network.connections.Length >= 1)
                     GUILayout.Label("Ping to Server: " + Network.GetAveragePing(Network.connections[0]));
             }
  
             if (GUILayout.Button("Disconnect"))
                 Network.Disconnect(200);
  
             ipaddress = Network.player.ipAddress;
             port = Network.player.port.ToString();
             GUILayout.Label("IP Address: " + ipaddress + ":" + port);
         }
     }
  
     void OnConnectedToServer()
     {
         foreach (GameObject go in FindObjectsOfType(typeof(GameObject)))
         {
             go.SendMessage("OnNetworkLoadedLevel", SendMessageOptions.DontRequireReceiver);
         }
     }
 }