Hello Fabio,
Than you for viewing my uploaded screenshots today.
I am going to phone Steinberg this afternoon (about a couple of ongoing issues which have hopefully been ironed out), and I will mention this to them (and also your kind advice). To be honest, I may just purchase a new dongle because my current one is slightly cracked (and feels very loose) even though I have an elastic band around it.
I updated from Windows 8 to 8.1 in December and the dongle worked fine (in this respect) up until this week !!
Best,
Paul