Spotify literally holds your offline content hostage (it can be downloaded and they just randomly say songs can't play) and doesn't let sleep timer work, unless you go online every few days. I have cleared cache repeatedly, uninstalled, etc per Spotify's "help" but it does nothing to resolve issue. Problem is with the app, but they refuse to take responsibility or fix it. Seems like their way of forcing you online sooner so they can track you (supposed to be every 29-30 days). Terrible service
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