@Johnbous In your current setup with powerline adapters, what is the speed you are getting on PC connected to adapter, when running speed test? There may be other option you haven't considered, but I...

@Pairis You will need to look at Show List screen in Deco app to find how Decos connect: and after that open page for specific Satellite Deco to verify its connection and where it is connected:...

@nickarsow Actually, one more thing: anything special or different about SSIDs for Main and Guest? Non-English symbols for Main but not for Guest? How about swapping Main and Guest SSID names in Deco...

@nickarsow If you have two different 2.4GHz WiFi networks (which are in your case Main and Guest) and device can connect to one but not to another, it usually points at the following that is...

@MinamiHopeful The only workaround I can think of: Power off all Satellites. All devices will have to connect to Main Deco. For those devices that you want to keep connected to Main Deco, open device...

@MinamiHopeful This feature is not available for the Deco mesh consisting of M5 and E4s. If you want to have that feature, you'll need to replace all your E4s with M5s and remove E4s from your Deco...