Submit > No entrys, no mails, nothing

Hey. First i have to say, that CalderaForms is a awesome Plugin. It seems like – cause it won’t work on my site http://suinmo.com/inhalte-einreichen/

WP 4.3.1, Theme enfold, CF 1.3.0.2

Caldera-Debug is on

I make my inputs, press “send”, an ajax-loader apears, but i didn’t recieve anything – no formentry, no mail.

I tried without Image-Upload and/or Video-Upload,
reduced the whole form to one single page,
deactivated all other plugins,
deactivated all the ajax from my Theme enfold,
everything i tried doesn’t work. > Just an ajax loader appears for a while, then disapperars, my submit-button is something like grey and nothing else.

I tried to make CalderaForms completly without ajax, too – but then, when i press “submit” i get a blank page wthout content in the body.

Any Ideas?

https://ww.wp.xz.cn/plugins/caldera-forms/