Oh dear sorry – after rewatching my screenshot I found that I looked in the wrong place for the category Name… I inserted the correct taxonomy == ‘ld_course_category’ and now your filter works like a charm.
Thank you so much for helping me out this quick and sorry for the confusion – it’s getting late and I better shut down the PC, haha. Thank you – ticket can be closed. Great work!
(you may consider this filter Option “hide” for the next update, it works really good. 🙂