GP child theme seems to break Dispatch heading

Hi,

I created a child theme with GP child theme to add css for post image captions (font smaller and in color).

It seems it breaks the WP Show Posts header set-up in Dispatch which now shows up as 4 posts under each other, not as in Dispatch format ( 1 big left, 3 small in collage right). Not sure issue is created by caption code in child.

I also get this message in site library: existing Site Import Detected; I am not sure it is related.

Can you help please?

Will also try again to see prob still there.

Nicolaas