AdvancedTimer does not work

timer = DependencyService.Get<IAdvancedTimer>();
timer.initTimer(50, timerElapsed, true);
timer.startTimer();

private void timerElapsed(object sender, EventArgs e)
{
}

For some reason, timer never fires so timerElapsed never gets hit. Anyone had this problem before? I'm having this problem on Android though I did not test iOS.