@WelshWitch52 buying a third party booster/extender can actually make things worse as the hub and extender's WiFi can interfere unless they are designed to be compatable.
The choice is too either buy Sky's WiFi Max bundle that can provide matched extenders see https://www.sky.com/help/articles/sky-wifi-max. The alternative is to turn off the Sky WiFi and use a set of third party wifi access points where the first is linked to your Sky hub by ethernet.
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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
