Update your app to the last available version first!
To create a playlist you must have at least 2.0.5 version. Please so the following:
1. In order to add a track to the existing playlist or to create a new playlist, open the track menu:
2. Choose "Add to playlist":
3. Click "Create new playlist" to create new playlist and if you want to add a track to existing playlist, choose one of the already created ones:
4. Enter the name of the playlist and press "save":