I am not getting alerts...should I hear a buzz? – Reporter App Review

I just got the Reporter app to track where I am spending my time. I want to be alerted every 30 mins. I put that in the Notification Settings I clicked on REGULAR and checked that off But I am not hearing the alert go off? Does anyone know what I am doing wrong? Or is there a quick easy tutorial on line? Thanks Gayle
Review by Gayle H on Reporter App.