Not to interrupt this lovely dialogue, but I would say that you haven't yet downloaded the licence to your dongle. This can be done from any PC connected to the Internet. On your Internet PC you have to:
Install the LCC software
Insert the dongle when told
Then follow instructions, as given on screen, and also in the manual.
Then when you insert this dongle into your music PC it should see the licences when you open LCC.
DG