DS9 worked for me a few days ago. I had to take out the turrets on DS9, then take over the station in ground combat, then finish up the space combat. I did get the mission before it worked, but then it was working about three days ago.
That would explain why they haven't been working at least.
Buuut, one would think they wouldn't implement the quest until it's ready to keep confusion down at the very least. Makes sense to me at least.
Yeah, someone screwed the pooch methinks when they released the quest before it was actually implemented. Probably be a few more weeks until they are. Just delete the missions; when they're implemented Quinn or what's his name will be begging you to come save the Fed again.