Update:
It really was a problem with the stylesheet. WordPress kinda did not read the style.css properly.
Okay I will ask there for help.
Thanks for helping!
@John
Yes it does, it appears as normal text below the picture.
Even though I just copied the styles from the one that was working (without the repeater) it does not work anymore. When I try to search for the text it appears on the top left and it is invisible and when I try to hover it, it does not show anything; so the hover does not work, too.