So here's a question for the people having this problem, are the sectors there and just greyed out? I just went to deal with our airship and only grabbed 1 cereleum tank because I wasn't going to send it out. Another member hadn't done it in a few days and wanted to see it. Anyway, what I saw was that only sectors 1-4 were highlighted with 1 cereleum tank in my inventory, because the higher level ones require more tanks. maybe this will solve one or two of the problems some of you are having.