Hi Fotis,
Thank you for your answer!
In the category settings under "Item view Options - Item created date and time" is set to hide. Likewise under social sharing the twitter, facebook and Google+ button is put on hide. Linked in and another button are not listed.
How can I find out if I have K2 overrides inside my template?
Here is the link to the page:
p525441.mittwaldserver.info/index.php/wohnhaeuser/garagen-carports
Thanks,
Oli