Think I might have found the issue. Even though I used WPS to connect the extender and so the SSID and authentication was identical on the router and extender, there appears to be an internal network...

@Tony Hi Tony, yes I've tried resetting it. The extender works fine in general, anydevice connected to it has access to the internet and functions fine. It's just this issue when the device is part...

@Tony Hi, the model number is TL-WPA281(UK) Ver:3.0 Thanks

I have an AV200 which does a good job of extending my wifi range but I have to keep switching it off as it breaks my Google Home setup. When the extender is on, any device close enough to use it can...