If you recently purchased CCleaner Professional and your copy of CCleaner is still showing as 'free' or 'unregistered' (or you are still receiving notifications that you have expired), then you need to register CCleaner with the information from your Cleverbridge order confirmation email. To use the paid features of CCleaner Professional, such as the full version of Health Check, you must have it registered with a valid, active license key. Do I need to register my CCleaner Professional? It also includes solutions to problems that you could encounter when registering.
This page explains how to register your copy of CCleaner Professional, CCleaner Professional Plus, or CCleaner Professional for Mac.