For those who can't play without pressing the purchase button

Don't start right away. After starting the game, wait about 1-2 minutes before playing. Ads are supposed to play intermittently, but if the ads aren't ready, the game just freezes. If you give it time for the ads to prepare before starting, you can play without interruptions. Well, if you absolutely need to play for quests or something, go ahead, but It's not fun enough to go through that trouble. haha