Find Answers and Get Support › Forums › Gorgo – Multi-Purpose Gutenberg Blog & Magazine Theme › Theme Customizer › Categories are non-existent on the theme child. › Reply To: Categories are non-existent on the theme child.
By changing the theme (even for a child theme) the customizer options are reseted.
To customize the posts page, go to Customize > Posts > Posts page and select the right options in the General and Layout page.
Please find the attached screenshots.