I have three deco M9 Pluses set up in my apartment. On the app it says everything looks good, but it appears that one of the units is not receiving or producing a wifi signal. On the page that shows an overview of the system, the main unit and one of the satellite units have a signal, but the third one doesn't, instead it has an icon that looks like a plug. I cannot find anything about what that icon means, but it doesn't have an IP address, and it doesn't say that it's connected to the main unit. Any help would be appreciated.