Hi Angelina! Sorry but you guys have experienced an unfortunate bug that we're working to fix... Quitting mid-quest just for the "All Nations" quest results in you not being able to move ahead unfortunately... The only temporary fix I can offer for now is:

You can press "P" on your keyboard, this will auto-complete the current quest and trigger the next. This will skip a unit game though, and you won't be able to get points for it.

The other option would be to try another day after we upload a new build with a fix to this... So sorry!

We can't make any progress in the chapter