You click a shortened link in the description. That link takes you through 3-4 ad-filled "link protectors" where you must click "Allow Notifications" (never do this).
: Kamo uses online activation. Pirated keys are usually blacklisted by CCleaner's servers almost immediately, rendering them useless. Features you get with a Trial/Code Anti-Fingerprinting
Most websites or videos claiming to offer free activation codes or "cracks" for Kamo are misleading. Here is why you should be cautious: Security Risks : Files labeled as "keygens" or "cracks" often contain malware, spyware, or ransomware