If you have already registered with the "username & Password" mode, you can no longer log in with the facebook mode.
since you have already entered this mode and have written this post what problems are there to continue like this?
EX POSSESSORE di Freemont FWD 170Cv Urban MY2012 Bianco
Guidato con TANTA soddisfazione per 8 anni e per 165.000Km