@JasonHill first point is to reducec security level for the hub in the My Sky app from wpa3-t to wpa2 as that might sort it for you. If it doesnt turn off the 5GHz band in the same advanced settings area in the app, network the doorbell then turn thec5GHz band back on.
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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
