@SeanTerry look at the lights on the ONT City Fibre fitted as that maybe showing an error. Its worth runnning the service checker in the My Sky app overca mobile connection as once it picks up the loss of connection which takes up to an hour it should offer help.
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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
