Why does it go to sleep?

I tell minebot to go do a mine for me then it says "Going to sleep in 30 seconds for best results go on the minebot app" I do then I waste my time so if you can fix that I will give it 4 stars also fix where when he spawns in survival he can die by fall damage,lava,mobs,and more then I will rate 5 for now I will rate 3

Awesome_Cake about Minebot for Minecraft PE