I live in a coach house (all on one level which is up a staircase) and have a ring video doorbell which is downstairs and is the opposite end of the building from the router. The router is upstairs. I can not move the router as it is plugged into the main phone socket (sky router). I have been googling all day but can not find a good long range WiFi extender to bridge the gap. I have a ring chime pro which should bridge the gap but it doesn’t. Can someone please recommend a good, long range, reliable WiFi extender please. (I have no electric sockets near my front door either)!