After installation & One click demo import go and check home page if navigation is broken(see below image) then follow below steps.
Header Default
Primary menu navigation is used for header default.
Header-v1
Primary menu navigation is used for header-v1.
Header-transparent
Primary menu navigation is used for header-transparent.
Header-dark
Primary menu navigation is used for header-dark.
Footer-v1
Footer menu-1, Footer menu-2, Footer menu-3 and Footer language menu navigation are used for Footer menu.
Footer-v2
Footer menu-5, Footer menu-6, Footer menu-7 and Footer menu-8 navigation are used for Footer menu.
Footer-v3
Footer menu-4 and Footer menu-5 navigation are used for Footer menu.
Footer-v4
Footer menu-4 navigation is used for Footer menu.
Footer-v5
Footer menu-6 and footer menu-7 navigation are used for Footer menu.