Your current subscription can only be renewed for 6 devices. You may however, purchase a new license that could accommodate all your devices. We offer Maximum Security for 2, 4 and 6 devices. Below is the link to our online store.Trend Micro Maximum Security
Should you wish to purchase a new subscription, you will be given a new license which you have to activate on all your devices. You could do this upon installing the latest version of the program on your computer. Please note that this version is no longer supported on Windows XP. If you are still operating on Windows XP, we do recommend upgrading your operating system. Below is the link for the installation instruction.Installing Maximum Security 2017
Let us know if you have other concerns.