Homepage post limit?

Hello,

Firstly, thanks for this awesome theme. ??

I have a little problem with first page. It doesn’t show all the posts and post count won’t change even if I change the number form reading settings. Does this theme have some sort of first page post limit? I don’t know what to do. Can you help me?
Maybe there’s an opportunity to add “older posts” button in the footer of a homepage?

Thanks!