Stuck on loading Leaderboards

Hi all! i have a small issue when i try to loading the leaderboards on my app, it just stuck on loading when show up. the user login and adding achievements works fine, just when i trying to load leaderboards it stuck, thats my code for login:

Code (CSharp):

1.  
2. public class LogIn : MonoBehaviour {
3.  
4.      public void Awake () {
5.         DontDestroyOnLoad (gameObject);
6.         PlayGamesPlatform.Activate();
7.        
8.         Social.localUser.Authenticate((bool success) => {
9.              if (success) {
10.                  Debug.Log("You've successfully logged in");
11.                 Application.LoadLevel("mainMenu");
12.              } else {
13.                  Debug.Log("Login failed for some reason");
14.                  Application.Quit();
15.              }
16.          });
17.  
18.          PlayGamesClientConfiguration config = new PlayGamesClientConfiguration.Builder()
19.            
20.              .Build();
21.        
22.          PlayGamesPlatform.InitializeInstance(config);
23.  
24.          PlayGamesPlatform.DebugLogEnabled = true;
25.        
26.      }
27. }
28.  

and this is my code for trying loading leaderboards:

Code (CSharp):

1. public class LeaderBoardManager : MonoBehaviour {
2.  
3.     public void LeaderBoard () {
4.          PlayGamesPlatform.Activate();
5.         PlayGamesPlatform.Instance.ShowLeaderboardUI("CgkI15nOqsIaEAIQAQ");
6.      }
7.  
8.      public void addScore(){
9.          PlayGamesPlatform.Activate();
10.         if (Social.localUser.authenticated){
11.             long score;
12.             score = Random.Range(2500,5000);
13.             Social.ReportScore(score, "CgkI15nOqsIaEAIQAQ", (bool success) =>{
14.                 if (success){
15.                 ((PlayGamesPlatform)Social.Active).ShowLeaderboardUI("CgkI15nOqsIaEAIQAQ");
16.                 }else{
17.            
18.                     Debug.Log("Add Score Fail");
19.                     }
20.                 });
21.             }
22.         }
23.  
24.     public void getAchi(){
25.         if (Social.localUser.authenticated){        
26.             Social.ReportProgress("CgkI0NbOnbcKEAIQAg", 100.0f, (bool success) => {
27.                 if(success){
28.                     ((PlayGamesPlatform)Social.Active).ShowAchievementsUI();
29.                 }
30.             });
31.         }
32.     }

 

solved, just replaced ShowLeaderboardUI("CgkI15nOqsIaEAIQAQ"); with simple ShowLeaderboardUI();