Go through the entire education interview until you reach a screen titled "Your Education Expenses Summary". Click edit next to the student's name. That should take you to a screen “Here’s your Education Summary”. Click edit next to “Education Information”. You should reach the question about having completed four years of college prior to 2020. If you don't see it, delete the graduate 1098-T and go back to the “Education Information” section again. After answering the 4 years question, you should then be able to add back the graduate 1098-T.
It sounds like TT is treating the checked box 9 as saying you already completed 4 years.
