I have followed the documentation to setup the theme
1-Download theme and other files (plugin)
4-Activate the theme
5-created home page
6-chose it as static page in Site Reading Settings
7-trying to customize content
8-it does show new images loaded on slider from WordPress left menu but does not show on-site including other sections like aboutUs or Services
If you got stuck somewhere then send us the query. If you want we can set up your theme, make a user for us assign administrator role and send us the username and password along with the URL at @vwthemes.com">firstname.lastname@example.org, We have a free theme installation support.
We hope this gives you the information you need.
Please let us know if you need anything further and we would be happy to help.