question

Following code creates new user every time in ios devices. The same code works fine in other titles and in editor and android phones.
 
TitleID: D37E

        GetPlayerCombinedInfoRequestParams paramRequest = new GetPlayerCombinedInfoRequestParams();
        paramRequest.GetUserAccountInfo = true;
        paramRequest.GetPlayerProfile = true;
        paramRequest.GetUserVirtualCurrency = true;
        paramRequest.GetTitleData = true;
        paramRequest.GetUserData = true;
        paramRequest.GetPlayerStatistics = true;


        PlayerProfileViewConstraints profileConstraints = new PlayerProfileViewConstraints() { ShowAvatarUrl = true, ShowDisplayName = true, ShowLocations = true };
        paramRequest.ProfileConstraints = profileConstraints;


        //trim deviceUniqueIdentifier to 30. or else playfab throws an error
        string deviceUniqueIdentifier = SystemInfo.deviceUniqueIdentifier;
        if (deviceUniqueIdentifier.Length > 30) deviceUniqueIdentifier = deviceUniqueIdentifier.Substring(0, 30);


        LoginWithCustomIDRequest request = new LoginWithCustomIDRequest()
        {
            TitleId = GameSkinData.gameSkin.currentGameData.playfabID,
            CreateAccount = true,
            InfoRequestParameters = paramRequest,
            CustomId = deviceUniqueIdentifier
        };


        PlayFabClientAPI.LoginWithCustomID(request, (result) =>
        {
            PlayerProfile.playFabID = result.PlayFabId;            
            if (onLoginEvent != null)
                onLoginEvent(true, LoginType.Guest, result.NewlyCreated, null);           
        },
        (error) =>
        {
           LogEvent(GameEvents.GameError, new EventBody("ShowLoadingScreenError", error.ErrorMessage));
        });