STUCK IN CANNIS HYPERGATE

Can you please try to replay this SP campaign part using your latest MISSION save? Fight with Nomads should be not a problem (unless you kill too much of them which may make Dom'Kavash hostile), more likely you missed some of mission triggers like reaching some of ends of trade lane etc. In case of issues I strongly advice to precisely follow given instruction and follow generated mission points including docking with trade lanes etc. using autopilot ... and in any case, please do not use autosave for "replays", this is assured way to have problems in SP campaign sooner or later.