There seems to be a wordpress bug with some of my sites. when i access the backend, it seems to be completely blank and missing all the code. however it seems to be functional on the frontend. this has occured with several pages on my site loca-dating.de and i have not been able to fix it yet
temporarily disable all other plugins, clear any browser caches and then re-edit that page. If the content is displayed, then its a case or re-enabling each plugin to see which one is causing the issue.