Official comment
You can have as many computers as you'd like connected to your account, which is identified by your email address. Your systems must all have a unique name. They all have access to the same data that you have synced in your account. All you need to do on your new system is install the Syncplicity client and login with your Syncplicity email address. Syncplicity will prompt you to tell it where to store the folders you have synced on your new system.