Hi Andrea,
Thank you for buying our theme. We hope it will meet all your expectations! 🙂
We’re sorry to read you’re facing this issue. My best guess is that something went wrong during the import, it’s recommended to address the issue right now as it might lead to other problems in the future.
In this case, we really suggest you to reset your WordPress database using WP Reset (https://wordpress.org/plugins/wp-reset/) and start fresh with our setup wizard.
You can easily install the theme by relaunching the setup wizard, as it will programmatically do every steps for you.
Don’t hesitate to come back to us if this issue still persists.
Regards,