Build cant join a build via server list

[kaktusyonok]

Hello everybody,
the server list finds all the lobbies flawlessly, but if a build is hosting, other builds can’t join, but the editor can. if the editor is hosting only the first build can join. if i start a second build, it can see the server but can’t join. But everything is find if i use join code(Relay). same happens with udp/dtls.
here are my scripts:
LobbiesList:

using System.Collections;
using System.Collections.Generic;
using Unity.Services.Lobbies;
using Unity.Services.Lobbies.Models;
using UnityEngine;

public class LobbiesList : MonoBehaviour
{
    [SerializeField] private Transform lobbyItemParent;
    [SerializeField] private LobbyItem lobbyItemPrefab;

    private bool isJoining;
    private bool isRefreshing;

    private void OnEnable()
    {
        RefreshList();
    }

    public async void RefreshList()
    {
        if (isRefreshing) { return; }

        isRefreshing = true;

        try
        {
            QueryLobbiesOptions options = new QueryLobbiesOptions();
            options.Count = 25;

            options.Filters = new List<QueryFilter>()
            {
                new QueryFilter(
                    field: QueryFilter.FieldOptions.AvailableSlots,
                    op: QueryFilter.OpOptions.GT,
                    value: "0"),
                new QueryFilter(
                    field: QueryFilter.FieldOptions.IsLocked,
                    op: QueryFilter.OpOptions.EQ,
                    value: "0")
            };

            QueryResponse lobbies = await Lobbies.Instance.QueryLobbiesAsync(options);

            foreach(Transform child in lobbyItemParent)
            {
                Destroy(child.gameObject);
            }

            foreach(Lobby lobby in lobbies.Results)
            {
                LobbyItem lobbyItem = Instantiate(lobbyItemPrefab, lobbyItemParent);
                lobbyItem.Initialise(this, lobby);
            }
        }
        catch (LobbyServiceException e)
        {
            Debug.Log(e);
        }

        isRefreshing = false;
    }

    public async void JoinAsync(Lobby lobby)
    {
        if (isJoining) { return; }

        isJoining = true;

        try
        {
            Lobby joiningLobby = await Lobbies.Instance.JoinLobbyByIdAsync(lobby.Id);
            string joinCode = joiningLobby.Data["JoinCode"].Value;

            await ClientSingleton.Instance.GameManager.StartClientAsync(joinCode);
        }
        catch (LobbyServiceException e)
        {
            Debug.Log(e);
        }

        isJoining = false;
    }
}

LobbyItem

using System.Collections;
using System.Collections.Generic;
using TMPro;
using Unity.Services.Lobbies.Models;
using UnityEngine;

public class LobbyItem : MonoBehaviour
{
    [SerializeField] private TMP_Text lobbyNameText;
    [SerializeField] private TMP_Text lobbyPlayersText;

    private LobbiesList lobbiesList;
    private Lobby lobby;

    public void Initialise(LobbiesList lobbiesList, Lobby lobby)
    {
        this.lobbiesList = lobbiesList;
        this.lobby = lobby;

        lobbyNameText.text = lobby.Name;
        lobbyPlayersText.text = $"{lobby.Players.Count}/{lobby.MaxPlayers}";
    }

    public void Join()
    {
        lobbiesList.JoinAsync(lobby);
    }
}

Please help.

[Yitzchak_Cohen]

Have you tried getting a friend to join as the third player? This could be a limitation of some part of the network layer that it uses the same information in the client builds and can’t create a second client locally.
You can do a developer build to see if any errors are being logged in the builds. You can also check the server logs to see if there are any errors occurring there.

[kaktusyonok]

Ok thanks, i will try later.