difference between "Device list" and "address list" on Smarthub 2

[teka]

My Smarthub 2 manager is showing devices in the device list which do not appear in the address list.

Please can somebody explain the significance of device listed in the device list but not in the address list

Thanks

[licquorice]

The hub manager device and address lists are about as much use as an ashtray on a motorbike.