@ImtiazAli No it's not. I think the screens posted It's the old version from the playstore. The new app has no "+". This is actually the app without "+".

@Alexandre. There is no support here?

I'm pretty sure the app forces me to create a new Deco network. There is no option to add a Deco. This is the problem, indeed.

@Alexandre. they are also sold separately factory new. Unfortunately in the app there is no option "add a Deco to your network", but only the configuration as a primary Deco connected to the modem,...

how can I add a new Deco M4 device to an already existing Deco M4 network (with three elements) successfully configured a couple of years ago? I just bought the fourth device (the same as previous)...