I changed my Facebook username after logging into the iOS Facebook integration thing in settings and now I can't change the username to the correct one
Ok so I logged into the iOS Facebook thing (not the app) with my email address in Settings and then I changed my username in the Facebook app (while still using my email address to get into the app). This message came up saying the my password was wrong. The username didn't change and it kept asking for my password (I tried several times). I tried to delete my account but it kept asking for my password for the old username. What should I do? I've tried uninstalling the Facebook app as well several times too and using. different account in the app.
iPad 3-OTHER, iOS 7.0.4