Deductions & credits

I keep seeing this answer, but I can't figure out for the life of me how to delete Form 2210! I don't see an option to do that anywhere. I accidentally checked D (about amounts withheld or paid) and it was a mistake, and even though I keep going back and marking "no" instead of "yes," it still shows up checked on my final return and won't let me file!!! I'm beyond frustrated. How do you get to a screen where you see an option to delete that form and start over? The only way I can get to it is through the underpayment question, but it just prompts me with questions, I don't see a screen that lists the forms and lets you delete and start over.