What do the different tray icons mean?

The CCleaner Cloud icon in the system tray on your computer changes to show what the Agent is doing.

 Awaiting Confirmation
The Agent is awaiting confirmation via the CCleaner Cloud web app.

 Normal
All is well – CCleaner Cloud is ready to use.

 Activity
CCleaner Cloud is at work – most likely logging you in, cleaning or defragging.

 Warning
CCleaner Cloud has a temporary issue that's preventing it from working correctly, such as no internet connection.

 Error
There's a critical problem that CCleaner Cloud can't fix automatically.