Problem with Android notification

I'm very happy with your product, however the Android notifications are a problem. I get the pop up but no sound. I'm very familiar with settings for Android and the problem isn't with my phone. It's your app. I seen your troubleshooting steps and understand them. Again it's not my phone. Please fix, an audible notification is pretty important when you're away from home. I don't spend all day looking at my phone and I'm going to miss a motion alert but will end up catching it when an intruder is already gone