Ah, I see. Facebook's login system is very unreliable at times.
You can login to the Desktop app using your facebook email (the one that gets all your notifications) and facebook password.
My suggestion would be for you to create a new account with a different email address from the one you use for facebook (past or present). That will give you a Spotify username of your choice, so you won't have to rely on facebook anymore.
Once you have this new account, customer support will help you migrate your Premium privileges (if you have them), library, playlists, friends, etc. to this new account.
osorniosRock Star 24
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