it keeps on lagging whenever you play any stages so when you try to do the chapter stages that has an "all excellent/marvelous" mission, you automatically fail because it keeps on lagging. and at chapter 4 stage 40 of txt, whenever i try to watch an ad (to make the mission be 1500 excellent instead of all excellent because yk its lagging) it won't work, as if i didn't watched an ad when it did played. I hope the bugs gets fixed, please.