@Yoge you need to contact Sky report the failure and they will send you a new hub out. Swap the power supply over and return the new hub and the broken power supply to Sky.
To help I am escalating your post to the Sky team who support the forum who should be in touch soon to offer you a private online chat session to get this sorted. Keep an eye on the forum as if you miss the message just click the brightly coloured chat icon which will be added to the forum pages for you to use.saving a long phone call.
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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
