Who Me Too'd this topic

I have been using Spotify for 6 years and I have never been more outraged. I recently got a new phone and my local files had disappeared from my playlists. I have followed every tutorial and guide explaining how to get them back for the last 3 hours with no results. The songs still work fine on my Mac but I am just prompted with a message saying "Song Not Downloaded" on my mobile device. I have connected both devices to my hotspot and two seperate wifi connections with no different results. The new playlist with local files has been downloaded on both devices but are still not working. I have done this process multiple times before so I am aware on how it's done. Please explain to me why this is not working.