Spotify supports devices running up to Android 4.4.
Android 2.2 users can access Spotify in Google Play but will not receive updates beyond version 0.6.5 of the app.
So, if you're having a problem, you must be in the wrong.
Oh wait, that information is incorrect? So Spotify is allowing people to sign up whose devices won't work? Even though it would take about 10 minutes to write an update and get it uploaded to the site? Wow, Spotify really mustn't care about devoting even the smallest amount of resources to helping their customers!
And haven't done anything. That's why this is so embarrassing, they won't even take the smallest steps to provide a good customer experience. It would take literally minutes to fix this. Again, they've wasted more time removing messages containing working apks for these people than providing guidance for them.
For a company that wants to be a world-class tech brand, glaciars would be shocked at how slow they operate.