Hi Alex,
Please follow the steps below.
1. Clean your full database “OR” reinstall a new WordPress with a new database “OR” use WP Reset plugin
2. Then install the theme (follow the steps from the provided documentation)
3. Then install all of the required plugins (follow the steps from the provided documentation)
4. Then active all of the installed plugins (follow the steps from the provided documentation)
5. Then import all of the demo data (wait until all of the demo data are imported completely)
Best Regards,
ThemeLooks Support Team