Pagination stops working after publishing

Hi there,

I am using post-grid for some weeks now and just discovered an issue i can’t cope.
I have generated a grid via post-grid an implemented it in a POST for showing some POST of a different category. Only 3 posts are shown per page. The pagination offers correctly more pages to choose from at the bottom of the grid element. While the post is in draft, the pagination’s JS works totally fine and changes pages with the content by putting /page/2/ at the end of the URL. This stops working as soon as is publish the post and display it on my main page. The pagination still offers the pages at the bottom of the element but by pressing on of the the content stays the same and no /page/X/ appears at the end of the URL.
The Settings for my permalinks are /%category%/%postname%/
While in Draft it works totally fine.
Sticky or non sticky i get the same problem.
Layot Editor:

Title with Link
Character Limit: 200
Link target: _blank
CSS: display: block;font-size: 1.7em;padding: 5px 0px;line-height: normal;text-align: center; text-decoration: none; font-weight: bold; color: black; font-family: “Noto Serif”,
Georgia, serif; text-indent: -0.3em;

Excerpt:
CSS: display: block;font-size: 1em;padding: 5px 10px;text-align: left;

I am very clueless… since it is working while in draft. Please help me 🙂

Best
Bert

The page I need help with: [log in to see the link]