Retirement tax questions

My wife's information was compromised online a couple of years ago and IRS has been sending us a PIN number to use when we file electronically ever since! I just finished filing and am ready to transmit our return but the Turbotax software did not ask for any IRS issued PIN numbers. The letter from IRS indicates that they won't accept our filing without the PIN number. Anyone knows where I would enter this six digit PIN number? There was a self-assigned PIN number that the software asked me to create as our signature which was a 5 digit and not a 6 digit. Any help or guidance would be greatly appreciated!