All post not showing

Hello,

After activating the theme i realized that all posts are not showing both on the home and category pages. It displays only 6 post both on the home and category pages. The load more button is visible on the home page but it does not load more post, while the button is not visible in categories pages. I have checked my reading setting and it is showing 20 post per page.

Kindly assist please as i love this theme so much that i wont let it go.

Thank you