Thank you! It works and is all fine now.

As in, I have used it before and saved it so the network can be seen on the saved network but it won't show up on the available networks. Forgetting it doesn't change anything and it won't show up...

The LEDs are what they should be, wireless on, RE on, stable 4 bar connection. I've named the extender to my WiFi extender and I can view it on saved networks, but it just won't show up on the WiFi...

I've had the extender for a while now but after a recent power cut it will connect to the router and has a good connection, but it is not discoverable on the WiFi list on both my phone and laptop....