A few days ago my main vault started crashing within about one minute of being opened. I tried force closing, clearing cache and every other standard trick. I don't want to uninstall because I don't know if I'll lose my saves and I've bought quite a few lunchboxes.
I figured out that the game is crashing whenever it tries to save which it does every minute or so. I tested this by loading the vault, collecting a few rooms resources, and then quickly trying to return to the main menu to force a save. Sure enough the game crashes and dumps me back to the android home screen. I started a new vault which works fine, so this has something to do with the game not being able to handle large vaults and either corrupting them on not being able to save them.
I hope this will be fixed soon, but if not who can I contact to get my purchases either replaced or refunded?