Your CleanMyMac activation number can only be used on one computer unless you bought a license for multiple Macs.
So, if you want to transfer your CleanMyMac license to another computer, you should cancel current activation first. That's how you do it:
That's it! Now the license is disabled, and you can use the activation number on your new Mac.
If you have already removed the app, or do not have access to the computer anymore, or forgot the activation number, please use License Retrieval to recover and reset your license.
In case you face any problems, contact our Customer Support for assistance.
Clean, optimize, and maintain your Mac with the all-new CleanMyMac 3. It scans every inch of your system, removes gigabytes of junk in just two clicks, and monitors the health of your Mac.