I believe he's talking about the Tal Shiar access codes you can use at the beginning, before entering the station (One of the Optionals to bypass the sensors).
There isn't a 'correct' code for that one, you just have to match the numbers to the code sequence it gives you. If memory serves, you have 3 different lines of numeric codes that you can alter, but only one part of each line (the first line will only change the first digits, the second line the middle, and third line the last part.)
So, alter the first line until the first set of numbers matches the satellite code, second line until the center sets match, and third line until the ends match. You will have the proper code sequence, but it will be split between three different codes.
Possibly. Did you cycle through all of the possibilities (I think it's 5 or 6 before it resets). I ran through it a day and a half ago and it was fine. I *should* get Romulan #3 there today, if I have any issues I'll be back.