Unable to trade with new colony

[Rockinsince87]

Just to add, when the original bugged airport terminal was finished and fully built, it started responding to trade offers fine. I think maybe while unfinished, it was stuck in some kinda "not part of city" state? And finishing it caused it to re-check this state? Not sure entirely

I had this happen to me just the other day. New colony, but my build order was different. 
Airport > Capitol > Police Station > Broker > Flag (I almost forgot to place it) 

I was not able to trade with the colony and the colony was not importing population. I waited 8 hours until someone suggested in chat I manually move people to the colony via cryo berths just to see what they would do. They all died because the city was not importing anything including air  :)

I destroyed the four above buildings and rebuilt them all in the same order. It just started working after. Very strange indeed. 

I built a few other colonies after, no issues after that incident.