Mali Robot

I have FC3 in installed section for some reason, and had to un-tick it. No key of course, and I can't de-install it, but I'm not sure should I do it, maybe I break some dependencies? I mean, FC3 should or should not be there for those who own separate planes from FC3?

Ok, I got, I had to disable FC3 from module manager, somehow it was activated, I'm sure I did not do it.

I previously had A-10A and Su-25 standalone, activated and working. Today I bought F-15c standaone, started the game, when in main menu I clicked on F-15c icon, game started to download something and when it finished it brought me back to main menu, but this time icons for A-10A, Su-25 and F-15 were gone, but FC3 icon was there and in color (meaning it's activated). Now whenever I try to fly either of these aircrafts game prompts for FC3 activation, not accepting key for F-15, meaning that game really believes I have FC3 although I did not purchase it. Can you explain what is wrong here, have I overlooked something or is it a bug?