@cgaertner TP-Link Deco does not like devices with static IP address configured on them. Even one static IP address per MAC - and you won't see that device in Deco mesh list of connected devices....

@Folkranger I wonder if there is another WiFi network with the same SSID, but different password. For example, the one from your modem/router you haven't turned off. If there is, device may try to...

cgaertner wrote PS: I am a bit baffled about the hardware version which I had to enter above. According to the dropdown list there seems to be v1 to v7, on the Deco's type label the only number that...

@cgaertner How was your network configured before you deployed Deco mesh on it? Specifically provider's modem (bridge/router), Raspberry Pi, to where Raspberry Pi were connected.

CharlesM99 wrote Thanks for any help you can provide! @CharlesM99 I think you've got more than bargained for. I suggest you try these X75 Pro. You said you have experience with Deco mesh and Deco app...

@Strat640 This E4S, it really does not want to tell how it is connected. I suspect it uses Ethernet, it should. In any case, it is functioning, has clients connected to it. You can ignore that issue...