Two days ago, I noticed that two playlists I had published on the platform had disappeared. I tried to add these playlists back to the platform, but I got an error message saying, “This Spotify link is invalid or unavailable.” But I checked my Spotify profile settings, and these playlists are public. Please advise on how to resolve this issue because I want to add a song to the playlist that the artist sent me, but right now I can either get a refund or reject this song.