Open CCleaner and click on in the bottom-left corner. Select My Subscription or Subscriptions . Click Enter license key or find the Activation Code box. Paste your key and click Activate . 3. Using Professional Features
If you have purchased a legitimate license, follow these steps to activate the Professional features: Open CCleaner and click on in the bottom-left corner
: Includes the core cleaning engine to remove junk files and tracking data. Open CCleaner and click on in the bottom-left corner