After your purchase has been confirmed you will receive a welcome email including the subscription key as well as some instructions on how to activate your key.
- Login to your Client Area at the Proxmox online shop and go to "Services" - "My Services"
- You will see a list with all your services, including the subscripton key (starting with "pve...")
- Login to your Proxmox VE host, click on your host, and go to the tab "Subscription" and to "Upload Subscription Key". Insert the key.
Your Proxmox VE host will then automatically validate the key via an online connection to https://shop.proxmox.com - make sure that your host has access to https://shop.proxmox.com.
Every subscription key is bound to the unique "Server ID" of your server and is regularly checked for validity.
You can also trigger the check by clicking on "Check" on the Proxmox VE admin interface.