RC4 not moving in-sync with aircraft controls

I have been testing the RC4 in DCS and Elite Dangerous, and I am having the following problem in both (note these are the only two programs I use, I have not tested the sim in other games):

The motion platform does not move in sync with the controlled motion of the air/space-craft. When I move the joystick, the aircraft moves correctly, but the RC4 moves differently -- I move in a yawing motion around in the cockpits seat. The RC4 only rotates/yaws, and it does so in the reverse way of whichever way I am moving the joystick; it does not pitch and it does not roll.

The RC4 motion platform moves in-game the same way it moves when I run SimTools Axis Testing with output type "DOF Output", versus when I change the Axis Testing type to "(a) Axis Output" where I can test the axes individually; however, testing with "(a) Axis Output" works correctly, as expected. When I test with "DOF Output" the RC4 only yaws, regardless of which motion I select (Roll, pitch, etc.).

About my SimTools setup:

I have SimTools correctly installed. I have patched DCS and Elite (they both say patched). I have run the PluginUpdater (in administrative mode, which I required), and I added the plugins as required. Before starting the game, I have selected the correct game in SimTools.

I don't know what I am doing wrong, all help would be appreciated.