hello just now i've started up the game, when it suddenly rebooted my phone. so, when i fired it up again, i saw that i had no more boosters. how can i fix this?
Unfortunately, boosters and lives are saved only in your device and not in your account. I think that's the reason for your problem.I hope this will help!
Through this messages, I welcome you to the king community. I am request you for see community house rules here here Please remember, for android or i-phone boosters had directly save on device memory, You can't moved or sync them.by game crashing or uninstalling you will lose them permanently. Which not returnable. The studio, booster has not yet started the syncing order. So you can face such problems.Here are some tips for not facing this kind of problem in the future,
Make your device software auto update.
Make your 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
See here more tips for safeguard your saved boosters.