Blog Grid showing all

Hi there. I love this theme! I’m just having a slight issue.

I seem to have all posts on every blog grid, despite choosing the specific category that should be displayed.

I am not sure if I’m doing something wrong, or if there needs to be a certain number of posts per category for it to work, or what.

I’m using a child theme. I’m not sure if that matters.

Any help would be really appreciated.

Thank you!