I need to deactivate creative cloud on a broken computer so I can reinstall on my new computer, please help? I have the serial number

If you don't have access to the previous computer on which you installed the app, contact us by chat or phone. To ensure a quick resolution, be sure to have any purchase-related information ready.

You can also refer to :

Activate and deactivate Adobe products

Activation and deactivation troubleshooting.

Pattie