@Positivejohn have you tried a factory reset yet?
Make sure the Mini Hub or Mini Connector is plugged in and the power socket is switched on.
Press and hold (Add) on the Mini Connector for more than 15 seconds, or the F. Reset button on the Mini Hub for one second to go back to its original settings. Give it a couple of minutes.
If everything’s okay, the Power, Data, Ethernet and Wireless lights will come on.
Thank you NeilO for your reponse, have tried factory reset twice, still NO data light on either units.
Power and wireless are alight.
BT mini Hub kit 11ac WI-Fi home hotspotPlus 1000 multi 3 Piece kit.
@Positivejohn have you tried connecting them to the same electrical socket side by side to pair them? I'd also try an alternative ethernet cable if you have one. It would do no harm to try an alternative ethernet port on your main hub also. Post back and let us know how you get on.
Thank you NeilO for your reply Tried your comments. changed the ethernet lead. still the same mini connector into sky hub showing power and wireless lit no data lit is a fault with the mini connector.