Attached pictures shown as unattached

Hi!

Yesterday I really got in trouble with following website: http://wordpress.wirsindfriseure.de/

I followed following post to able zooming on mobile devices
https://kriesi.at/support/topic/zoom-in-on-mobile-devides/#post-175234

After that all following happened:

1. my featured and preview images from my portfolio entries were lost. On my iMac just three, but after cleaning my cache all of them. http://bit.ly/1km7U3X — in the media-folder I realized, that all the pictures were suddenly marked as unattached.

2. Avia layer slider on the homepage hasn´t been loaded – Found out in the media-folder, that the 1. picture of the slider has although been unattached.

3. On my homepage the same pictures although got lost (used just as images with text above)

So and now today, it´s almost workin, but in the media folder again the pictures are marked as unattached. –> http://bit.ly/1km8cYP

I already updated enfold :-(

Regards,
Isabel