I have 3 courses with the same course-cat.
But course-cat archive page just show one course.
All 3 courses are published.
Can you please share your admin credentials with site URL here in a private reply
I resolved creating a taxonomy-course-cat.php template to overwrite the archive layout that was not working...
Okay, but this is default wordpress functionality and it should work. Something, a code or something else, might be overwriting the course-cat due to which it was not working
closing then