Lumia 635, operating system version 8.10.12397.895 

Spotify app, ver 5.0.5491.5995

Problem:

Spotify app will not play music when spotify is online (wifi connection), loading sign will appear quite frequently but music won't be played.

Synchronising playlists to offline works OK

Radio won't play

When spotify app is put on offline mode, playlists that are synchronised offline to my device plays without problems.

Sometimes, first second of the song is played... then silence.

Actions done:

Phone restart --> didn't help

Application uninstallation and installation --> didn't help

Checked wifi connection playing music with Deezer and MixRadio --> Connection OK

When problem began:

After spotify app upgrade to version 5.0.5491.5995