The boosts don't work. I've tried several times to use the " serve all waiters" boost, "freeze time" boost and the " refill all waiters timers" boost and nothing happens. For the harder levels these will probably be needed but if it doesn't work then what? Uninstall I guess. Update: Once I learned how to play the game properly I haven't had any other issues. It's a great game and I enjoy the challenge.