PhotonNetwork.GetRoomList () does not give array of rooms

Hello everyone, stopped working method PhotonNetwork.GetRoomList (), but PhotonNetwork.countOfRooms shows that there is room. Please tell me what could be the reason, here's the code:

public class SearchRoom : MonoBehaviour
{
	public UMP_Manager um;
	public Text RoomListText = null;
	public Transform RoomPanel = null;
	public GameObject RoomInfoPrefab;
	private List<GameObject> CacheRoomList = new List<GameObject>();
	private float refresh = 1;

	public void UpdateRoomList()
	{
		if (!PhotonNetwork.connected)return;

		if (CacheRoomList.Count > 0)
		{
			foreach (GameObject g in CacheRoomList)
			{
				Destroy(g);
			}
			CacheRoomList.Clear();
		}

		RoomInfo[] rl = PhotonNetwork.GetRoomList();
		if(rl.Length > 0)
		{
			RoomListText.text = string.Empty;
			for (int i = 0; i < rl.Length; i++)
			{
				GameObject r = Instantiate(RoomInfoPrefab) as GameObject;
				CacheRoomList.Add(r);
				r.GetComponent<bl_RoomInfo>().GetInfo(rl[i], um);
				r.transform.SetParent(RoomPanel, false);
			}
		}
		else
		{
			RoomListText.text = "There is no room created yet, create your one.";
		}
	}

	void Update()
	{
		if(refresh > 0) refresh -= Time.deltaTime;
		else
		{
			UpdateRoomList();
			refresh = 1;
		}
	}
}