I cant
- add or remove items to the menu (i can add them, but when clicking 'apply' i see a flash and everything is back to original)
- change the default view for folders (or all folders)

i have tried
- purge & reinstall
- purge & reinstall and delete configs (but im affriafd i deleted kde4s, not 5)

what to do? thanks in advance

kubuntu 17.10 / dolphin Version 17.04.3