@Lisa374 assuming the xbox hasn't been moved rdboot the unit and try to add the connection again. Any games console needs a strong connection so if it is far from the Sky hub consider buying a powerline networking kit that uuses your home's mains cabelling to carry the data.
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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
