App crashes after opening

[Kosacco]

After 30/40 secs I open the app, it crashes no matter what I do: if I start a playlist, if I look through my music or even if I do nothing and simply leave it open whithout even playing music. Tried with Wi-Fi or 4G, tried in aeroplane mode, tried using the offline session, nothing seems to work. Tried to unisinstall and reboot my phone before installing it again, tried simply uninstalling it and reinstalling it.The fact is i've downloaded all my music (around 2500 tracks) at the lowest quality, using around 16GB of memory for Spotify.
I'm using an iPhone6 128GB with iOS 9.3.3, and a Premium account on the app updated to the version 5.7.0.

I've been using Spotify for years, always been a Premium user, don't know what to do.
Please send help

[CQCar]

I am having a similar issue. A few songs will play and then the app just crashes. I have deleted app and reinstalled and it'll work fine until I upload local files from my computer.  Can someone help suggest a solution. Not uploading any local files would probably solve it but that's not a true solution to the issue.