If you encounter game data lost when playing Aqua Chaos, it’s usually caused by changing iCloud account on iOS, or Play Games Services on Android.
You have 2 options:
1. Continue playing with new reset profile on the new account.
2. Go back to the last account and your last saved game data will be loaded back.
If you go for the 2nd option, please follow these steps:
1. Quit game completely (make sure it’s not running in the background).
2. Change back to the last account by following these guides: