I have created a K2 article that is linked to a calendar to display upcoming events.

When you click on the date of the event, it takes you to the K2 article which has a form plugin where a person can register for the event.

I come across two problems:
1. After i save any changes to the article i get an error message saying: Captcha verification failed, please retry".
2. When i tested the form out, I received the same error message on the frontend of the site, and the form did not submit.

I have tried turning the Recaptch plugin that comes with Joomla! on then off, but it happens anyway.

Can any one help solve this issue?