@Krystyna_ you are not contacting Sky by posting in the forum and their lines are extremly busy this morning due to a major issue with one of their TV systems. Check thst the hub is showing a white light if it is using a mobike phone try using the camera to scan the QR code on the base of the unit as that should automatically connect the phone's WiFi. If it doesnt and the SSID on the base of the hub isnt showing on the list of WiFi networks then you have a dodgy hub and you will have to persevere with calling Sky.
If tge hub is not showing a white light work through this trouble shooter https://www.sky.com/help/articles/hub-lights-explained-max-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
