The captcha on my client's website stopped working. I am not sure how to fix it. Are there any thoughts? I don't have much access to the site any more, he just wanted to see if I could figure it out. The most detail I can give is that it is Joomla 2.5. I also haven't done this in a long time, so I don't remember everything to check or tell him to check. Here is the page having the issue (link below). You can see that the captcha is not working properly. It is using the Joomla contact form that comes with the Joomla installation.
I didn't find the right solution from the Internet.