Can you explain how & why this happened. ?... Seems like game is getting frustrating to play anymore with saved rewards & booster acquisitions being taken away ?
We are very pleased that you have joined our king community. Here i am, trying to help you.🙏🏻
The size of the game app is big for every update. Some devices can not run this game properly if the device is less RAM. For this, the game app crashes. At least 3 GB of RAM is needed for the game to play.
For android or i-phone boosters had directly saved on device memory, you can't moved or synced them. and by the game freezing, crashing or uninstall you will lose them permanently. which not returnable.
Here are some tips for not 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
Tell me for more details, What device you using for this game ?