Just bought it off Steam and loving the game so far but I do have these issues:
1) How to change supply lines(delete existing ones) needs to be explained in the manual, took me hours of wasted time looking for the solution online to no avail. I finally played the game the next day and saw the little box in the bottom right which allows you to delete it if you have the supply line selected.
2) Sometimes my troops get 'stuck' and I try to get them to move but apparently the game has a pathing issue and the green path line just flashes super fast but the troops do not move. Really sucks when you are in battle and this happens so your troops cannot retreat to draw the enemies out.
3) Would be nice in the manual to have a section which denotes what symbols are what that appear over cities.