@Anthp quite a common issue as doorbell czmeras are the wrong side of a external double skin wall. You will often need a WiFi booster of some sort ideally near a window overlooking the area.
As doorbell cameras are outside tge home tgey are not covered bybSky's various WiFi guarantees.
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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
