@Bootc resetting the hub will not sort a line fault. Check the lights on the hub and use this trouble shooter https://www.sky.com/help/articles/hub-lights-explained-start.
If all of the lights on a black hub are green and no data flows then either turn the hub iff for at least 60 minutes or use the disconnection option in the hub's web interface which should clear the fault.
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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
