Thank you for your response. The Anti-Bot 2.00 is integrated in the script of my website, just followed the tutorial. I checked every step of the tutorial several times.
The only thing I would like to know what php code does the job of removing the link after clicking. At this moment it doesn't do that. I only scrolls back to the top of the site (not reloading).
Still hoping that some one can help me with this (probably small) issue. I guess some people on this forum must have experience with Anti-Bot.