@Kerrydoll
You may need to log into the Hub administration settings in the My Sky app and reduce the wireless security level from WPA3 to WPA2-PSK.
If that doesn't work, try temporarily suspending the 5Ghz wireless broadcast and see if the cameras connect to their app then.
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Sky Glass 55" (on ethernet) & two Stream Pucks (one ethernet / one WiFi)
BT Halo 3+ Ultrafast FTTP (500Mbs), BT Smart Hub 2
