How can I undo my "no" answer to Q did I receive Form 1095-A?

I have MEDICARE and medicare advantage. They are not in the marketplace hence I did not and will not get a 1095-A form. TT tells me my tax return will not be accepted until I complete it -But I will not get one, I should not have answered the question. I have tried the back button and then returning but it does not remove my answer!

What can I do?