Theme acting on its own?

Hi guys!

I’m moving my Syndey-based page from one WP installation to the other. The new one is most up-to-date Sydney version, the old one wasn’t updated, so it might be one or two versions old.

The old page worked very well. After moving it to new location I discovered that there was an element added, that is completely unwanted and unnecessary. Right below my full-page slider a row with the text “Start” showed up. I didn’t want it, I didn’t make it. Why is it there? How can I get rid of it?

The old site is
The new one is

In page editor my page starts with NASZA OFERTA (services) part. There is nothing before that, so Sydney must have added it on its own…

I figured out the text showing up there is the title of my page. How can I get rid of it?

case closed