Can you please provide the page content (shortcodes, etc.) for the home page of the demo website? As well as tell me what the Page Attributes > Template should be set to in order to replicate the demo site’s homepage? I can’t seem to successfully replicate your demo’s home page.
You need to go to Settings >> Readings >> Here you can select Latest post option to display the section in homepage also you can go to Appearance >> Theme Options >> Here you will find all the options.