Losing content pages when updating – not saving content

Hi, It seems like there is a bug when trying to update a page. I keep losing all changes made within the page. Saving within KC editor works, but all changes get lost as soon as I update the page. any idea what to do?

I have e-mailed the kc support, no answer. Posted on the facebook page, but no on is able to help.

WP support can’t help either. NO ABLE TO WORK at the moment…

thanks for a fast feedback.

The page I need help with: [log in to see the link]