Import manually demo data.

Sometimes, because of different reasons (low hosting productivity, low php memory limit etc), you may face difficulties with demo content import. It's not a big problem, simply go to Tools > Import section of your admin bar.

Then click Wordpress

You will find demo-data.xml file in the package that you've downloaded from Themeforest under Resources / Demo Data. Find demo-data.xml and click Upload file and import.

Fill in the form, check the Download and import file attachments check box and click Submit. That's all.

Additional settings after import

After import you can select the page, which will be your homepage in Settings > ReadingA static page (select below). Choose the page from Front page: drop-down list. 

To assign a menu to the primary menu location go to the Appearance > Menus and select a menu from the list Select a menu to edit:. Choose the menu that you want to have as main menu in header. Choose, for example, Primary Navigation from list of menus. Hit Select button. The chosen menu will be opened.

After that scroll down to the bottom of menu to Menu Settings and check the box Primary Navigation of Theme locations. Click on Save Menu button to save changes. The location will be selected to the chosen menu

Revolution Slider import

To import Revolution slider you need Revolution slider plugin to be installed. You can find the file in the folder Plugins of the theme, if you haven't installed it yet. 

Now navigate in your admin panel to Revolution Slider > Import Slider > Choose archive from theme packge under Resources > Sliders select whether you need to overwrite or append Custom Animations and Static Styles > Import Slider.

Your browser will download a file with your slider in few seconds. After that you will see imported slider on the Revolution sliders list in front.