@Zoe154 couple of choices first is to get a wifi extender which Sky will supply on request if you buy theur WiFi Max package. The second however is better if you wantvyo game which is to buy a powerline networking kit which uses your mains wiring to get thecdata to an upstairs bedroom.
=========================================================
65inch Sky Glass, 3 Sky Streaming Pucks, Sky Ultrafast + and Sky SR213(white Wifi Max hub) main Wifi from 3 TP-Link Deco M4 units in access point mode
