If you can't download, play, or access songs
First, check iTunes to see if the song is ineligible for upload. Additionally, if you added the song to your library from the Apple Music catalog, it might no longer be available on Apple Music.
- Reset Network Settings
- Close then Launch Apple Music App
- Restart Your Device
- Sign out of Apple ID and sign back in
- Turn off and back on "Show Apple Music
- Update Apple MusicApp.
- Update iPhone Software.
Turn on iCloud Music Library with Apple Music
https://support.apple.com/en-ca/HT204926
Turn iCloud Music Library off, then on again
On your iPhone, iPad, or iPod touch:
- Go to Settings > Music, then tap iCloud Music Library to turn it off.
- Close Settings.
- Go to Settings > Music, then tap iCloud Music Library to turn it on.