Hi Vladimir,
Those breadcrumbs come from your theme, not The Events Calendar itself – we cannot support customizations or tweaks to themes or other plugins, only things specifically related to The Events Calendar and our add-ons for it.
With that being said, this is quite a simple CSS change so I took a look at your site for you and have CSS you should try out 🙂 Try adding the following CSS to the bottom of your theme’s style.css file:
body.events-archive p.breadcrumb {
display: none !important;
}
I hope that helps!
Cheers,
George