The City Defence Quests are bugged

Even when are in control of twice (at least) the amount of towers and treasuries around the city, i don't recieve more points than the enemy. Earlier on, it was only the later quests that were bugged this way. As I see it, I should be getting twice the amount of points every time they tick in during the quests (when I am in control of double the amount of towers and treasuries in the city).