When you watch an ad for a reward, most of the time it won't work, so you watched the ad for no reason. When you decline to rate the game, they give you an ad. I don't want to hear them try to say "it's your fault not ours". The greed is crazy, and they clearly know this is an issue from other reviews as well. I've had to watch 3 ads to get 1 revive cause the first two didn't work. It really ruins the experience but I know they don't care at all.