I got back into the game recently, and have experienced one issue multiple times: if I watch an ad to regenerate and click on it at all - which takes me out of the ad and into a pop up browser - it breaks my game. Going back to the Subway Surfers tab will present me with a blank screen, and though the ad countdown is still in the corner, the X will never pop up when the ads over. In order to play the game, I have to exit out of the app entirely and load back in, which invalidates my entire run.