In your original question, you didn't say that you were awarded the house in the divorce. That does change things, and you owe the entire amount. The IRS lookup for the 2008 credit probably does not know that you were awarded the house.
From the IRS website:
S14. During their marriage, Taxpayer A and B purchased a home
together and claimed the credit. Later they divorced and Taxpayer A
transferred the home to Taxpayer B under the divorce decree. Taxpayer A
did not keep any interest in the home. Are repayments waived for
Taxpayer A?
A. If the home was purchased in 2008,
Taxpayer A is no longer required to repay any remaining amount of the
credit. Taxpayer B now is responsible to repay the entire remaining
amount of the credit in equal annual installments.https://www.irs.gov/uac/first-time-homebuyer-credit-scenarios
