The Community in more languages
Now the forum welcomes more languages.
You'll see a green translate button in comments and discussions to turn them into English
The cause of your problem was app crashing.
Here are some tips for not/less facing this kind of problem in the future,
Make your device software auto update.
Make your game app auto update.
Don't open game when battery below 25%
Don't accept incoming call when you playing this game.
Close all background running app before start this game.
Make free device internal memory up to 2 GB
Keep RAM free.
Since you purchased the boosters you will need to contact our Player Support to ask for a refund.
Go to the game's Start Menu, then Settings - Help Center - Purchases & Gold Bars - Contact us and send them an email.
When sending an email directly from the game, Player Support will automatically get your purchase history and all transactions the recent 90 days.