New or old customer it makes no difference ...to efile you must enter in the 2017 AGI OR the 5 digit PIN from the 2017 return which is a number you picked to represent your efile signature. If you filed a return last year you must have one of those items. If you did not file a 2017 return then enter a ZERO for the AGI and skip the PIN entry.
Then you will also pick a 5 digit PIN to represent the 2018 efile signature ... it can be anything you wish except 00000.
You will also need to enter the 6 digit code that is sent to you to confirm your email address.
Where in these steps are you having issues ?
