Sorry, I did not explain myself very well. Currently I have the plusnet fibre router attached to an extension telephone socket in my study. Intermittantly I lose the connection.

Plusnet have told me to plug their router into the main BT socket and see whether I still lose the connection.

I have a number of devices hardwired to the router in my study.

I am wondering whether I can attach the PlusNet router to the main BT socket and then use my Archer VR900 in the study to pick up the wifi and repeat this via network cables and wifi.

By the way, I do have a TP-Link RE450 AC1750 range extender which works fine with the PlusNet router. And I have tried using the Archer VR900 instead of the PlusNet router but it refuses to connect