Hi, on E-3 and VC-137 cabin cockpit door can't be opened, is that correct?
Yes, those models don't have a dedicated cabin.

the thrusts reverses on the E-3 are not functional
This corresponds to the rw plane, which also has no such things.

The RUN Big Upper Fuselage Raddar switch is only available from a pop up 2D little panel and there are no switch on the VC
True again. You only have a 2D panel there. There's a rumour that, if you rotate the dish fast enough, it produces lift. We should try it.  :D

The last one, both of them are out of the "Captain Sim" fsx start menu
I'm sorry, I don't understand that point.  :-/