We suggest that youchange the source folder of the local files on the pc. The steps are: Uninstall Spotify on both devices > create a new folder somewhere else on the pc and move the local files there > install Spotify again > remove any potential source folders and add the new one > download the playlist again.
Then, restart your PC, log out and log back in your phone to check if that makes the difference.
Let us know how it goes 🙂
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“Music acts like a magic key, to which the most tightly closed heart opens.”– Maria von Trapp