Front page displays setting has no effect

Hello,

I have a wierd problem. I installed a Snazzy Archive plugin and created a page called “kazalo” and somehow this page became my default page when I hit home button or when I load my url: https://www.udobnoposvetu.si

I do not want that and I did not change the default WP settings and even after disabling the plugin and deleting the page it still wants to go there. I checked out in DB and there the setting really gets saved and I have it set to Your latest posts, but somehow this setting has no effect. Also if I change it to show up a statis page, it changes nothing, the page always goes to /kazalo/,… no matter what I do.

Where could this come from?

thank you in advance!
Peter