I cant get past the Google sign up

[AC Question]

I reseted my sons nabi and it asks me to put a email that is already syced into the device when i put it in i also put in the passWord but It keeps asking me to put in the email again and again how can i get passed this so my son can go back to play games on his nabi?????

 

[B. Diddy]

Welcome to Android Central! Are you certain you're entering the correct Google account and password, and that Caps Lock isn't turned on?