Think I have overcome this.... It was the RF light that came on, after much pressing of the reset button, finally came up as pairing, and got it connected. Looks like the Wifi light is bug#ered, so lesson learned!

Have a HubRF06HA - Obviously an RF hub, (actually branded as GridConnect in Aus), to add control of RF remotes, has been working fine for several years, but decided to reset, and re-add (foolish...) After deleting the current setup in the app, can't get it back in to pairing mode. Power on, and...