Each stage of the Cloud Garden Activity has its own theme and a time limit. Complete theme-related tasks while the stage lasts to earn milestone rewards. After a stage is over, your points will be reset to zero, and you'll need to earn them again in the next stage.

Note: Sometimes you'll need to unlock specific technologies in the Cloud Lab first.

Pro Tip: Themed stages include many tasks, but you don't need to complete all of them. Focus on repeating the ones that are the easiest for you to earn points faster and claim rewards!