Google play services doesn't call authentificate function

Unity Engine
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1

Hi! I want to add leaderboard to my game. But google play services doesn’t even call sign in function.

 void Awake() {
        PlayGamesPlatform.Activate();
        PlayGamesPlatform.DebugLogEnabled = true;
    }
    void Start()
    {
        
        
        
        PlayGamesPlatform.Instance.Authenticate(ProcessAuthentication);
    }

    private void ProcessAuthentication(SignInStatus status) {
        if(status == SignInStatus.Success) {
            Debug.Log("Success");
            txt.text = "Success";
        }
        else {
            Debug.Log("Failure");
            txt.text = "Failure";
        }
        
    }

Text in editor changes to failure in editor, but on on adroid it doesn’t change the text. Why unity doen’t call this function?