@Tina5485 doorbells can be a pain to connect. It is best to connect them to your network before mounting them outside as that eliminates any issue with signal level. Doorbells usually use the 2.4GHz band and can have issues connecting to the dualband SSIDs Sky hubs and many other routers use these days.
What colour us your Sky hub as the instructions are differentvfor the white hubs than the older black type.
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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
