the app is crap and continues down the spiral. trying to control the volume of multiple speakers simultaneously by using the “main” volume controller and i get to watch the volume level of the individual speakers go all over the place. sometimes an individual speakers volume controller button doesn’t populate, just a grey line where the speaker volume button and volume level should be showing. Crap. All these speakers in my house. Don’t buy these products. The company has gotten to big for its own good. i was an early adopter, having purchased my first speakers at least ten years ago. the last two years have been a struggle and i regret the investment.