Cant get audio alarm to work consistently

I always get text notifications of the alarms I set but the audio alarms are hit and miss. Many times Ive tested it by having the phone in my hand, ensuring my volume is on and at the max, waiting for the audio alarm and all I get is a text notification. Ive also tried changing to different audio sounds and it doesnt help. And support wasnt helpful at all. Not a useful app if I cant trust that the audio alarm will sound.

Annvh22 about Pill Monitor Pro, v4.0