Shuffle play offline songs

[thefullards74]

Hi.
Can't seem to resolve this problem.
For the last few days when trying to shuffle offline songs during offline mode only two or three songs will play. Spotify will then pick a song that is not available offline and freeze.
Have tried uninstalling and reinstalling the app and making different songs available offline but the problem persists.
Any help appreciated.

[thefullards74]

Sorry. Have posted this on android but problem is with apple device.(iPhone 5s)