That mission when you get promoted to Khan and you gotta go to a pirate base. I did all the stuff, did 3/4 missions, when I was doing 4/4 mission I had to rob or kill 5 ships and sell 300 units weapons. When I robbed 5 random ships I got the message that now I had to sell the weapons, I went back on the planet, took weapons, sold, but nothing... I tried to sell it on different planets but still nothing. After some time when that mission failed 'cause I literally couldn't complete it I took that mission again, went in Atlas, planet Umius, but now I'm stuck there, when I ask for the special mission they say: "(player name), really, I'd love to throw you an interesting gig, but seeing as I'm under close surveillance by pirates and feeling the barrel of a blaster poking a hole in my side on a regular basis... etc... don't you even try liberating our systems from pirates, 'cause you'll never see another job from me again! I swear by Rachehan!"
So... this means I can't complete this mission? ever?
Edit: I think they weren't giving me the mission because the system was taken by pirates and I had to take the mission from coalition's system, but the mission itself about robbing 5 ships and selling weapons is still bugged or gets bugged sometimes.