im trying to add https://ics.ecal.com/ecal-sub/5fd23feb56a9ca5e018b45b9/English%20Premier%20League.ics and a few others to korganizer, and ive tried every way i can find to do that but nothing shows up.
this didnt work last time i tried kde back in 2012 or so either. is this a feature thats basically abandoned?
It could be that someone here knows, but I assume you will be better answered on the KDE forums: https://forum.kde.org/
Put the file in .local/share/korganizer. Then File>Import>Import calendar to add it.