Enfold gym loose content

Hi,

We imported Enfold Gym and wanted to change the pages to our content. But when we change the premade page about/team the saving loose content.
This is our page: http://ivanvolgyitura.hu/ujoldal/pinceszetek/ (renamed from about/team)
If we edit this page, change the pictures, sometimes the original gym pictures and text comes back. Do you have an idea what is the problem?

Thanks for your answer
Janos Hamar