[jjd-uk]

Strange enough, when i have them there in the existing list and i leave that screen, check the list again, then they are not saved

But i can save the list under a new name and delete the old one...and then i have it...

Yes you need to use the Save button, but enter the same name and it will overwrite the existing one. Also forgot to explicitly mention, if you set up the playlist folder path substitution to be a folder on your NAS, and you do this on both the AndroidTV and PC to point to same NAS folder then they will share the same playlists. So if more convenient you do the playlists from Kodi on the PC, and the AndroidTV will automatically see them.