Once you downloaded and installed a product, you need to activate your license using a key.
License key activation is limited to a single machine at the time to prevent unauthorized usage by multiple users. If you need to use a product on more than one machine simultaneously, you will be required to purchase multiple licenses.
If you have canceled your subscription and your license key has expired, you won't be able to use the product anymore. If you wish to keep using the product, you will be required to renew your subscription or purchase a new license.