question

Greetings.
I tried to create local notifications for my unity android project. This is notification method copyed just from tutorial:

public void SchedulePush()
	{
		var sDate = DateTime.UtcNow;
		sDate = sDate.AddSeconds(5);
		var ScheduledNotification = new PlayFabNotificationPackage()
		{
			ScheduleType = ScheduleTypes.ScheduledDate,
			Message = "This is a Scheduled Message",
			Title = "Test Scheduled Push",
			Id = "TestScheduledPush",
			ScheduleDate = sDate,
		};
		var json = PlayFab.Json.JsonWrapper.SerializeObject(ScheduledNotification);
		PlayFabAndroidPlugin.ScheduleNotification(json, sDate);
	}

When i'm calling this method, i'm recieved only audio effect in my android. There is no image, title or description of my notification.
After that i added res/drawable folder in my project and put there app_icon and app_icon_transparent files.
After that, notifications start recieved on my phone, but without custom title and message - it's only name of project on title and empty block on message. Here is a screenshot how it's look:

Otherwise, on bluestacks emulator or Huawei mobile local notifications come immediately, without any delay.

Is there anny suggestions, where there may be a trouble? Push notification looks like receiving normal, if application is active.