Hi there 

We have 4 Sonos 1 and recently added a roam to

our system. In the past few weeks the app has kept losing our system and requires resetting. it repeatedly drops and seems to happen within a few hours of reestablishing. It’s pretty much left the system unusable 

To get the system working again we have to switch our WiFi hub (BT) off and then in again and it eventually appears 

Nothing much has happened that may impact this but we have recently added TP-Link Powerline (I think what they essentially do is plug into your router and then you plug in elsewhere and can run internet off an Ethernet cable - needed to do this to get WiFi in our garage).

We have tried repeatedly to reestablish but the only way it fixes is as described above 

Any help or advice welcomed.