All plugin purchases from the Unfiltered Audio website come with a voucher that must be redeemed on the Plugin Alliance website. All Unfiltered Audio plugins require a Plugin Alliance account for activation. The Plugin Alliance Support Page has the answers to most activation questions. All plugins can also be purchased at Plugin Alliance.
The Plugin Alliance Activation Manual (PDF link) is a detailed walkthrough for both online and offline activation.
By creating a Plugin Alliance account, you can also access free 14-day demos of every Unfiltered Audio product.