Popup showing and I don't know why

[Karolo16]

Hey y'all

I am new here and hoping to get help!

I have a problem with my Elemntor site roter-stern.berlin, it shows a popup image arrow and cancel button on every one of my pages as seen in the screenshot below.
I don't know how it got there and, more important, I don't know how to remove it properly.

I am really glad for any help. Thanks so much in advance!

 

[Community]

Do you see any active popups in the Elementor popup section ? FIrst would be disable them and see if it disapears .