If you're still experiencing this issue after trying these steps, make sure to click the +VOTE button. Also, it'd be very helpful if you could let us know the following in a comment:
Spotify version you end up with, device and OS.
Some details on when this issue happens on your device.
Are you using any smartwatches with Spotify?
Are you or have you been connected to other devices through Bluetooth? Which ones?
We're also very intererested in which type of network connection you use. Does it happen with both WiFi and Mobile data connection? If only the latter, we recommend that you talk with your telco to see why only Spotify is being restricted. Whether they did or did not find any cause, please let us know.