@Rebecca143 sounds like the booster has lost connection to the hub. Normally boosters should be placed no more than half way between the hub and where you need the boost so try connecting it closer tomthe hub. However if you have changed the Sky hub the issue could be the booster is not comptatable with the new hub.
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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
