Im not able to understand how to configure correctly the app to be woke up when I snore

Hello to everyone.

I’ve installed the app on my old samsung tablet nexus 10 which runs with android 5. There I don’t see any message that tells me that the android settings could not work. Despite this,it is able to detect my speech such as other sounds on the room,but it won’t send an alarm when it detects one of them. I tried to mimic the snore. I see that it detects it but it won’t send the alarm which should wake me up.