@CB69 movecthe booster closer to the hub as it needs a strong signal to be able to work. Normal advicecis to plug a booster in half way between where the hub is and where you need the extra signal. However if the booster wont connect in thecsame room as the hub it is faulty.
This page explains more https://www.sky.com/help/articles/sky-wifi-booster-what-do-you-need-help-with
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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
