After installation & One click demo import go and check home page if navigation is broken(see below image) then follow below steps.
Header Default
Go to Appearance > Editor > Template Parts > Header
Primary menu navigation used for header default.
Header v1
Primary menu navigation, vertical menus are used for header v1.
Header v2
primary menu navigation, vertical-menus are used for header v2.
Header v3
primary menu navigation, vertical-menus are used for header v3.
Footer Default
footer-default.
Footer v1
Pages navigation & page links are used for Footer v1.
Footer v2
Product categories block and custom links used for Footer v2.
Footer v3
Product categories block and custom links used for Footer v3.