@Alexandre. Thanks. Went back to basics, disconnected and reconnected devices and then added the Decos. Thankfully everything now seems to work. Happy New Year. Alexandre. wrote @Tom65 Please do two...

I needed to extend my WiFi coverage at home. I bought three TP Link Deco S4s to set up a WiFi mesh. I already had a BT Smart Hub 2 which provided reasonable WiFi coverage and an Ethernet connection,...