@Sophie325 forum members are not Sky staff so we would need more information beforecwe can help. Details like what the leds on the Sky hub are showing (see https://www.sky.com/help/articles/hub-lights-explained-start) and what TV box you have - Sky HD+, Sky Q or Sky Stream - as a start.
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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
