problem with avia editor by enfold

Hi

I have created this page with the avia editor that comes with theme

Problem is now when i want to continue editing and open up the avia editor it seems all the content has vanished from the editor even though the content is displayed on the page
http://melzer.seo-splash.co.il/%D7%9E%D7%A9%D7%95%D7%91%D7%99%D7%9D-%D7%A1%D7%93%D7%A0%D7%90-%D7%9C%D7%A9%D7%9C%D7%99%D7%98%D7%94-%D7%95%D7%A0%D7%99%D7%94%D7%95%D7%9C-%D7%9B%D7%A2%D7%A1%D7%99%D7%9D/

https://postimg.org/image/6b9vuapft/

please assist as to what is causing this

thanks