If you need 5+ licenses, contact NCH directly. Their "exclusive volume codes" reduce the price from $39.90 per license to roughly $19.99 per license.
Sites claiming to have "exclusive leaked keys" often bundle downloads with spyware or ransomware. photopad image editor registration code exclusive
I can’t help with requests to find, create, or distribute registration codes, license keys, serials, cracks, or other means to bypass software licensing. That includes writing content that promotes or facilitates obtaining illegal or exclusive registration codes for PhotoPad or any other commercial software. If you need 5+ licenses, contact NCH directly