Many years ago, online casinos had a fairly clear set of conditions for receiving a bonus, but, unfortunately, this is not the case nowadays. Casinos have begun to restrict bonus hunters in order to capitalize on them. Bonus hunters are players who only participate in casino promotions. Of course, casinos are companies and a successful company needs to make money in order to survive in the long run. Therefore, they began to defend themselves against bonus hunters and created a system of complex bonus conditions. It's absolutely fine because it's legal, but it can be very difficult for a novice player to figure it out.