Problem with post loop on homepage

Hello! I have problem with post loop on my homepage. I have a post loop widget (template : left aligned medium). When I click on “older posts” it takes me to page 2, but when I click on “older post” again nothing is happening. I don’t have also “newer posts” button. I try post loop widget on other pages, and it works good. My problem only appears on homepage.
I am aware my English isn’t good, but I hope you can understand me.

It’s my blog adress http://www.lawyerka.pl/

Thanks for Your time :)
Ewa