Many of the songs in Music on my iPhone and Mac are greyed out and show "waiting"
I have an Apple Music subscription.
I cannot access many of the songs in Music on my iPhone and Mac because they are greyed out and show "waiting." Clicking on one in iPhone gives, "This song is not synced across your devices. On your Mac or PC, go to Apple Music or iTunes for Windows and in Preferences select Sync Library."
I did de-select and re-select "Sync Library" this did not make any difference.
I also went to File > Library > Update Cloud Library. This did not help either.
These particular songs may have been ones that were originally on my hard drive in my iTunes library, but which apparently have disappeared since I got the Apple Music Subscription. However, I was still able to listen to them, until recently.