I just bought and started the Vurhonga Savanna DLC and went to complete the first mission. I completed the objectives, they were even crossed out in the mission log (as shown in the attached screenshot) but nothing happened. The mission didn't complete and there was also no dialogue when I claimed my first outpost in the map (which was one of the mission bits).
The order that I completed the mission bits in was, visit a lookout point, harvest an animal, then claim an outpost.
I then tried a few solutions I found online to no avail. And somehow without breaking the game even more (as far as I can tell so far)
(I also submitted this ticket to the website itself (which they have seen and replied to me that they're looking into it.), but I just wanted to know if anyone else in the Discord server has had this happen, and might have solutions I can try while I wait to see if it gets fixed.)