Diagnostic report 8079857. I've had my system for about 4 months. I had my Playbar connected wirelessly to my network and added a sub and two Play 1 for the surrounds. It worked great until about a month ago when the left surround started dropping off. When looking at room settings in the app, it would say (+SUB+?+RS). I tried removing from power for 30 seconds, removing surrounds, adding surrounds. Sometimes it would work for a few minutes and then drop off again. I tried setting it up as the right surround speaker and even switched physical sides and the issue followed, app showed (+SUB+LS+?). My system has received all the updates and I even have since hooked up my Playbar via a wired network connection with no improvement. I attempt to remove/add surrounds and it detects the speaker long enough to advance the app but is followed by the message "Setup Problem: There was a problem preparing your speakers. Please check your network connection or the power on your speakers in this room." The network connection is good, all white lights on speakers. I even tried factory reset (which I later found out may not have been a good idea) and no improvement. Only one of the Play 1s show up on the "About my Sonos System" section. I have tried everything I've learned in the forums and have no idea what to do next. Any help would be appreciated.