I’ve tried, they did suggest me added several lines of code into function.php but it didn’t work, I’ll chase again.

I found some more unusual behaviors:

If user hover at the category title, it does not shows the title name but shows strange code
Example page: http://dir81.otherfish.net/directory-dirtest2/categories/restaurant/
screenshot:
http://dir81.otherfish.net/wp-content/uploads/2022/08/dir-hover-category-title.png

and, the title should link to the category page it self, but it actually links to the first list of the category, in the case above: http://dir81.otherfish.net/directory-listing/329/

Also the WordPress default ‘Edit’ is not link to the category, but to the Edit of first list of the category, screenshot to explain: http://dir81.otherfish.net/wp-content/uploads/2022/08/dir-edit-button-category.png

If I switch to any other theme, it works fine, but when I using Enfold, it become conflict somehow….

Regards,
Vincent