I have the following problem downloading local files to my Android smartphone:
I am adding the local data to a playlist. When I then try to open the playlist in the app, the Spotify app closes directly, no error message. If I select Download Playlist there by a long press, the playlist is downloaded apparently, then it can at least be opened. But if you try to play a song the app skips all songs without playing one of them.
In the desktop version all songs can be played without any problems.
I already installed spotify on my phone, no improvement.