I still have problems to install Netflix. Either I can't install the Addon with the version 9.27 cause all the "old" stuff isn't avaiable or I become trouble with Widevine cause the clips still don't wanna play. Just to be sure: I only have to make a "kodi.conf" with this line, reboot it and reinstall widevine?
I did both way, first restart then reinstall and reinstall then restart, no changes. Just for visualisation: