Can't play downloaded songs

[ThiagoAvilaFCB]

Hello guys.

I'm having a strange problem with my Spotify.
I downloaded some songs on my SD card to listen to them offline, but they do not play (or they play for 20 seconds and stop).
The download icon is green, and apparently everything is correct, but I can not play them.
I can only listen to these songs if I'm online, or if I save them all to the phone's memory.

I'm sure this is not a problem with my SD card, since I can take pictures and record videos normally.

I've reinstalled Spotify, cleaned the cache, formatted the SD and still having the issue.

Anyone have any other ideas?