Thanks for using Wide Range PRO WordPress theme.
After activating the theme, please setup the homepage using following:
1. Go to Settings -> Reading -> Front page displays
2. Click on radio button of Your latest posts
3. Go to Appearance -> Theme Options and click on Restore Defaults in bottom side
To add slider images Go to the Appearance -> Theme Options -> Homepage Slider
Please check the documentation to setup and customize the theme
If you are still getting any problem in theme setup, kindly send us your website URL and WordPress admin login details at firstname.lastname@example.org
Please check and let me know your feedback.