I have still problems with the Loop element. Please take a look
at the attached screenshot and tell me if you have a solution for this.
Thank you in advance.
Attached files: Bildschirmfoto 2017-08-09 um 12.59.22.png
This is because of an excerpt issue. Go into your post, click Screen Options (upper right) and turn on the Excerpt field. Then put an excerpt in for your posts. Please let me know if that does not fix the issue, thanks.