I have same issue and turbo tax keeps denying it as the sale date is Jan 2021. Saying ineligible. I am thinking / feeling like it is glitch because of the minimum information I ofund as it is donation date and only need the 1098 c with the amount for the verification of the sale.
Is this you error. I found a lot of information about going back and ammending previous returns if you received your 1098 after filing that years. But none for this actual situation (ours Nov4 2020 - sale Jan 4 2021)
