Start an account at https://my.slateaudio.com/ and redeem theVSX passcode and link the iLok ID.
Download and Launch the Slate Audio Center and sign in with your credentials. If you do not have the Slate Audio Center, get it here:
Make sure the DAW is closed, as it will need to scan in the newly installed plugin after the installation. Once the plugin has finished downloading, locate in your downloads folder and double-click to unzip and run the installer.
Follow prompts in the Steven Slate Audio Center:
Launch DAW after installation has completed.