I’ve tried everything!  Incredibly frustrating!  I have an early gen Sub that gets through initial WiFi setup and connection to Amp - only to drop it within an hour.  Have tried adding local WiFi network in addition to Sonos dedicated network. Have tried Ethernet connection to set-up, then return to WiFi only - only to have Sub drop its connection yet again. This product is crap compared to all of my other Sonos products that have functioned flawlessly.  Yet it is one of the most expensive I’ve purchased.  Any suggestions would be appreciated.