By default, the engine cuts out all HTML tags, and with them the content that we write in the description field for WordPress categories.
To teach WordPress to understand tags, you need to add the following code to the functions.php file:
remove_filter('pre_term_description', 'wp_filter_kses'); remove_filter('pre_term_description', 'wp_kses_data');
By the way, to add a category description to the template, you need to use:
the_archive_description( '<div class="taxonomy-description">', '</div>' );
in the place of your theme where you want to display the text from the admin panel.