To keep it short, whenever I bribe the IMG I am green with them, until I undock at which point my reputation resets back to where it was and I am unable to dock at the station. However when the station is out of scanner range and I come back to it, it let's me dock. Is this a glitch or deliberate?
Also even though I have full rep with the Hessians and their ID, a few players have told me I have the Bunschuh IFF, is that possible or another glitch?
That is since Hessians are rephacked reddish-white to IMG to prevent them docking to IMG stations.
Hessians inRP are allied with the IMG, however since some Hessians were abusing the Freistadt base in O7 as pirate staging post the rephack was implemented.
I am not sure if that still works, but if i recall it correctly you could shoot Corsairs to fix your rep in outter space to dock an IMG base (though your rep will be adjusted again once you undock that station).
If you haven't seen any Bundschuh NPC with your char, it could be that your Bundschuh rep is even higher than your Hessian rep.
Doing a /droprep should fix the problem.