After importing the demo content you have to set up the menu and the home page.
Navigate to the Appearance > Menu. Go to the menu location tab and select the main menu like the screenshot below –
Home Page Setup:
Navigate to Settings > Reading. Choose ( Static Page ) for front page display. And select the Home & Blog page form the page selection drop-down. After choosing the pages to make sure you save the settings.
This theme support multiple home pages examples, so you can select any home page for the front page.