@Kevin_Z the hardware version is UK/1.20 according to the label. I've followed the link to the "powerline scan utility" but that leads me to "tpPLC_Utility_Windows", published date 2018-08-16, which...

@Kevin_Z Thanks, but I thought the WPA4220KIT code was for the "base unit" (connected to the router) plus the Extender (which is WPA4220 V1.2). According to the tpPLC app page on the Play Store it...

ps - the tpPLC Utility on my Windows 10 laptop doesn't connect to the device either. It just displays a spinning circle in the centre of the display. TP-Link Support - can you please help? Thanks.

I have a TP-Link TL-WPA4220 Powerline Wifi Extender in our garage (25m from the house) and am trying to use the tpPLC app on my Android smartphone to connect to the device so I can check the...