Downloaded songs will only play online?

[Ashm83]

My Question or Issue:

I have had Spotify premium for over 2 years. There have been no issues until today however. When I went to play my songs this morning, they would not play. The song would show when I tapped to play, but it was stuck at 0:00. I decided to go out of offline mode and go online. It was only then that the songs played. I went back into offline mode and they stopped playing. This is a problem of course because I use the download feature for everything on spotify. I have a majority of my songs downloaded and I just go into offline mode when I want to use the app to conserve data. I have never had this problem before this is incredibly strange. 

Edit: I have been tinkering with it and it appears that some songs will play. Occasionally a song will show up that actually works, and it’s always consistent. A song that doesn’t work won’t work and a song with does work will always work. 

Plan:

Premium

Country:

United States 

Device

iPhone 8

Operating System

iOS 12.3.1