App won't allow FB log in

[Alexandria209]

Recently I was logged off spotify. When I attempted to log back in via fb is said the username or password incorrect. They were both correct, I'm currently logged into fb. I've tried updated both fb and spotify. It will allow me to log into the spotify website with fb, just not the app.  Other accounts can log into the app on my phone. Please help! I'm going crazy! 

[Joe]

I'm a bit confused as, when you use the "log in with facebook" option, there is no possibility to enter a password. Could you please explain what you mean by "Other accounts can log into the app on my phone"?