Sorry for the confusion I may have caused but could hypu please go to the Settings app, then navigate to General>iPhone Storage>Spotify and share a screenshot of what it’s displayed there? :)
Have you tried to login with a different Spotify account or try using a different network?
Please let me know.
please find attached the screenshot of spotify app from free Iphone storage.
Thanks for your patience and for sharing that screenshot.
Spotify is always testing things in order to improve Spotify. There's more info here.
Let me know if you there's anything else I can help with. Have a lovely day!