@Hrishi the fault is not with your WiFi the hub has lost its broadband connection. Using a mobile connection run the service checker to see if thst tells you that Sky are aware of an issue affecting your line if it doesnt call them to report the problem so they can get it checked out.
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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
