From what I remember, the process is actually pretty simple once you know where to look. When I created my account a few months ago, I also logged in and saw the welcome bonus notification but didn’t immediately understand how to activate it. I spent a bit of time exploring the interface and eventually found that the bonus usually appears either in the promotions section or as a small notification in your account dashboard. What helped me was checking a short guide someone shared in a forum thread. It walked through the steps and showed where the activation button normally appears after logging in. I saved the page at the time because I knew I’d probably forget the process later. If you want to check it yourself, this is the page I used:
https://ghostinocasino.org/ . After reading that, I logged in again and the option to claim the bonus was pretty obvious. Once I activated it, the balance updated right away and I could start playing.