1. Buy — you receive a licence token like SO-XXXXX-XXXXX-XXXXX (on screen and by email). Save it.
2. Install the suite and open any tool, then paste your token into the activation window. That's it — the token binds to that PC and it's licensed forever, through unlimited Windows reinstalls.
3. Gaming PC offline? Use the redeem page from any device instead: enter your token and the Machine ID the app shows, and paste the code it gives you into the app.