Portfolio navigation not visible

Hi,
this is exact content of my site:
[divider]

[section_headline tag=”h4″ lined=”yes”]Default[/section_headline]

[portfolio category=”biurka-systemowe” order=”DESC” navigation=”yes” pagination=”no” view_all=”no” height=”” per_page=”-1″ columns=”4″ masonry=”yes” fluid_layout=”yes” layout_style=”3″ show_title=”yes” show_categories=”yes” show_link_button=”yes” show_popup_button=”yes” animate_filter=”yes”]

But naviagation is not displayed:
https://makieta.wpengine.com/?page_id=2