Annoyed and still asleep!

It says it starts off in low volume and then gets louder, but most of the time it doesnt get out of low volume??? And therefore doesnt wake me up! Even if I put full volume on ring and sound and have the app already on and have my phone charging, most of the time its at a low volume and only wakes me up like 30 minutes or more or even never. I dont know why its doing this for me....

sweetie2blossom about SpinMe Alarm Clock - Guaranteed Wake Up for Deep Sleepers, v1.2.5