Unless you use Premium for Family, you don’t need to register your address with Spotify.
You can travel the globe and take Spotify with you without needing to change anything on your account. Find out more about your country settings.
Got Premium for Family?
It’s not possible to change the address registered on an existing Premium for Family plan. If you move, or enter the wrong details, you need to create a new account (make sure you cancel the plan on your old account beforehand, and sign out everywhere) and subscribe to Premium for Family on that new account.