back up pin window on brand new phone

A

AC Question

Hi, i am a new andriod user and had bought LG LTE from US back in November as a back up from T-mobile store. Yesterday all hell break loose when I tried to start the phone for the first time. But it never went ahead of Backup Pin window. Had made atleast 100 different 4 digit codes but still unable to break through the window on this brand new phone. I tried to reset the phone but it kept on opening the reverse camera option.

I hope to find a solution on this platform so any suggestion will be a blessing.