>>The IRS gave me a different PTIN this year.<<
If you're lucky, maybe that means they decided it was too much trouble to go after you for all those past years, so they're going to give you a fresh start! On the other hand, maybe it means they're putting you in a special category they can watch more closely! But most likely it just means they mixed you up with another tax preparer whose last name starts with the same four letters or something.