The Sonos app is buggy, despite its painful upgrade experience. It will quit, while playing and make you reinstall the speakers (despite being mounted out of easy reach). Speakers are found and lost (not a wifi problem). I believe the Sonos server is to blame but there is no way to check on server operation. Tech support is difficult to reach at best. Sonos continues down the rabbit hole of questionable quality apps which reflect poorly on the great sounding, albeit pricey, hardware.