@Derbyram multiple possible reasons but assuming the TV can see the Sky network if you have a white Sky hub go into the My Sky app and find the hub's adavanced settings and check thst the WiFi security is set to WPA2 rather than WPA3-T as some TVs nitably from Samsung wont connect to that newer higher security level.
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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
