I posted #60 in 2023 but only recently bought a TP-link wifi range extender. The extender worked with my old wifi hub but BT has changed to a new one to connect to their digital phone network. My laptop can see it but my extender can't, so neither can my TV plugged into it by cable. The installation guide recommends the Tether app but that can't see my extender. Method 2 is to connect to
http://www.tplinkrepeater.net or
http://192.168.0.254. Method 3 is to press the WPS button on the router. None of the methods work so I will attempt to get an answer from BT.