Well, I'm sorry to tell you, but if your game has crashed there is no way to recover your saved game or paid lunchboxes, but I think I have figured out a way to prevent it from happening again. For some reason I'm not allowed to post links on here so just search for "Fallout Shelter Crash FIXED" by Zeke Clark on the YouTubes! As of right now it's the 5th one down! I hope this helped some of you. Enjoy!