I .. can't save my game. At all. I don't think the devs care at this point, but I simply can't save my game, from ANY of my previous autosaves. It sucks. I JUST started a new campaign, put 2-3 hours in and.. can't save.

What happens when you try to save the game?
Is you Documents folder on OneDrive?
If so, have you enabled backups of the documents folder on all computers.

When I try to save, the save button just doesn't work. It seems it has no functionality. I've tried to delete saves (which it does), but it simply won't save anything. No auto-saves either. Saves are currently located in the "Documents/my games" folder, not on onedrive.