We provide third-party extension keys from Plesk for products such as:
CloudLinux
KernelCare
Acronis Backup
Imunify360
You can purchase these keys in RCP from:
Plesk Licenses >> Order New Plesk License >> Third Party Extension Keys >> Order >> Select product type and period, then click on Order now
Activation Process
Once the order is placed, the activation key will be sent to the reseller.
Log in to your Plesk panel.
Go to Tools & Settings → License Information (previously 'License management').
Enter the activation key to install the product.