For the Italian user:
Long story short you need to reset the Smart Hub and choose 'San Marino' as country this time (for details see suggestion below).
Worked succesfully on a 2017 Q7F!
For everybody else:
if you want to try something similar (I don't think you would get local apps if you choose San Marino right?) get an idea of what I am talking about by doing a video search on the famous video website (...) with title 'Smart iptv reinstallazione su tv Samsung & lg'.
It's a little bit of a hassle, but hey it works!
Ho appena acquistato e installato un modello Samsung TV UE43NU7400XZT. Sono molto deluso dal fatto che non ci sia un'applicazione IPTV e non ci sia disponibilità per scaricare un'applicazione di terze parti.
HI @MarkosLov, thanks for response-just goes to show that some information online is not accurate. Not sure on the 2018 sets but perhaps Samsung do not see it as a priority.