Basically I have a website where when I've tested the contact forms, I can use the captcha just fine. It submits and everyone that is suppose to gets the email. However, my client and some of his coworkers try to use the same form and they are getting an invalid response with the captcha and cannot send email.
I am not sure why they have the problem. We disabled the captcha for now but I was wondering if you might have an answer as to what the problem might be.
Thank you for your help!