TT is saying amount of Market Place credit that was given was too much. I disagree. How can I dispute this?

At the point of entering 1095-A into TT. TT is now allowing the full credit I was given at time of signing up. My income is the same as I told MarketPlace it would be. MP gave me extra credit for putting money into my Roth IRA. Is TT not allowing for this? It is wanting me to pay over $500 more for my insurance.