Just for reassurance, Paulinmk, go to File... Preferences, click the RadarBox tab, and there should be a tick in the Share Flight Data checkbox.
If you are located somewhere where there is no other RB nearby, and you want to tell us where you are, we'll be able to tell you whether we can see your box's returns. If MK is Milton Keynes, there will probably be no way of telling!
Rod