Sigmakey generating incorrect codes for Alcatel P310A T-Mobile Tablet

I am trying to unlock a P310A, 014168001023208, 2AE4US2.

I have entered all 5 codes that Sigmakey generated (17167851518 thru 1979559981) and none of them work. I have 5 tablets in total, and have tried the codes generated on 3 of them - -and they all fail.

Please help,
Cellman2010