I love the game, but I hate it when I won then I click the video to double my coins and suddenly closes the app. I want to double the coins as it helps to buy equipment but when after I open the app after it suddenly closes, I won't get a refund of my coins! Please fix it. I hardly earned the coins by winning, but just a single click of the button to double your coins loses all the coins I earned instantly. It's not fair for users who hardly earned it.