Sort Order doesn’t work when viewed by category

That category page is not controlled by our plugin. That is a WordPress archive page for the “ufaq” post type. It’s the exact same thing as an archive for your regular posts. My guess is that maybe your theme is coded to display archive pages in reverse chronological order (this is pretty standard).

So, because the FAQs are just a custom post type, the category page for FAQ posts would, by default, make use of your theme’s category.php template file (or archive.php if it doesn’t have a specific category.php file). If you’d like to modify the category page for FAQs, we’d suggest duplicating your category.php file and creating one specifically for our post type, as discussed here: https://codex.ww.wp.xz.cn/Post_Type_Templates. Our post type is called “ufaq”, so you’d want to call your template file “category-ufaq.php”.