I bought the economics-pro theme to upgrade the free economics theme. When switching directly to the theme everything works well.
Unfortunately, when I create a child theme from the economics-pro (in the same way I did for the free economics theme), nearly the design is completely broken and the theme options in the appearance section do not work.
The child theme is not works properly. So we strongly recommend to use main theme as it is.
For any customization and theme related problems, we are always available to help you. If you have any questions regarding our WordPress themes, you can contact us through our support forum or you can mail us.