I need to protect one extra desktop PC. Can I buy an extra protection as five devices of my Trend Micro Premium Security subscription, are already allocated? What is the cost to buy one extra protection?
Option 2 - Transfer protection from an old device that you're not using now to your new PC. Here's an online article that has related information on this: Managing your Trend Micro Account (MyAccount) - choose "About Your License" and see "Removing or Transferring protection from a device/computer" section