Offline Songs "lost"

[Andreba]

Hi

I recently got a problem with my 10gb of offline music.

My offline playlists are still in SD card/android / data /Spotify... But don't appear in the app as these anymore! Just from one day to another! Sure I could just delete data of the app and download everything again, but I can't get wifi for that recently...

Any chance to get these back into the app?😕

Greetings and Thx for any help!