I've got premium now, and I imported my itunes playlists onto the mac app no problem, but when I log in on my phone, the music in my playlists (imported from itunes) doesn't show up. It just shows up as a bunch of empty playlists. It works fine on my laptop so I'm not sure why there is an issue.
I’m having the same issue with my iPhoneX. I downloaded playlists from iTunes many months ago and added Spotify music downloads to them. Now, on some of those playlists, the songs downloaded from iTunes are not showing up. On my iPad, however, those same playlists show up completely. Can’t figure out what’s going on.