Thanks for the guidance. I'm wondering what kind of statements/proof I am able to use in the appeals letter. Would I be okay if I show all the proof of support along with an explanation that "while the ITIN was received in 2025, the supporting evidence shows my support for my father in the 2023 tax year"?
What do you think would give the best chances of the appeals officer approving the filing status change that was previously denied.
