I made Envoy on a Friday night. On Saturday morning at about 10:30a I got my first FC, about four hours later (I was on the whole in-between time doing Diplo Investigations), I got my second.
On Sunday morning I got my third, was on/off the game throughout the day. I got a fourth FC sometime after Midnight Sunday night (actually Monday early morning). I made Ambassador shortly after on that same night's play session.
I didn't bother to check back with Jiro after ranking to Ambassador (since adding FDX is pointless now, I guess), but just for S&G I checked Jiro about a week after and he had an FC waiting. I've accepted it (it's in my Log), but haven't done it yet.
I don't know if that helps or not.
Oh, and for the record, I got 20 FDX on the first two, 10 on the last two.
Do you think the Diplomatic Investigations affect the availability of First Contact Missions? I typically only do two of those per day now that I'm Ambassador, but if I log on and don't see a FC mission, I usually do one or two more Diplomatic Investigations (and the Explore Star Cluster mission associated with those zones) and then I usually see a FC pop up.
Its been 8 days since I've seen a First Contact Mission myself. Seems odd that it would be that long between missions unless something is wrong.
Have you been doing the Diplomatic Investigations in the meantime? I seem to have a FC at least once a day, but I also do the Investigations (and the explore star cluster mission associated with the zone) when there isn't a FC up.
I've been noticing that the First Contact missions don't seem to get offered very much as well. From what I've seen so far I think that it is linked to doing the Diplomatic Investigations. I seem to get one First Contact mission for every six (2 sets of 3 Diplomatic missions) that I do for Jiro-san. It may not be exactly that much, but it has seemed to be following that pattern to some degree.
Yes there is an issue with the missions. In the last two weeks I've only gotten two missions and one was bugged. I do the normal missions twice a day every day on average (6 missions per day) for the last few weeks. I put a ticket in on the second of July but it got deleted. I've just given up and just do the missions since I only need less than 300 experience to finish.