It says "Facebook Email or Spotify Username" in the login box before typing in a username/email.
As far as I know, spotify uses username for login, and not email. By using your email, it's assuming you want to use facebook.
As far as I know, spotify uses username for login, and not email. By using your email, it's assuming you want to use facebook.
Of course, the lesson here (besides that spotify cannot be trusted) is that you should never use a password for more than one account. Sure makes me glad I switched to using a password manager that uses randomly generated different passwords for each service I sign up to.