@baris Thank you. Very valuable feedback. Ought the theme quickstart to be kept in sync with the plugin quickstart?
UNSOLVED If there are too many sub categories, they will not be displayed on the homepage and categories page.
If there are too many subcategories under a category, these categories are not displayed on the main page and on the categories page in the Admin panel. 10 categories under a category are displayed on the main page. More than 10 are not displayed.
You can increase that number in the settings of the category.