I had the same problem and I was asked to fill in monthly payments for 1095-a when trying to check out
Here's what happened, I had inadvertently indicated that I had a 1095-a, which I don't have, by checking the wrong box when asked if I have a 1095-a.
Do these steps to get that box unchecked.
1 go back to heading tab federal taxes,
2 under deductions and credits,
3 scroll down to under medical heading to Affordable care act (1095-A) hit update,
4 check the box - "no i didn't receive a 1095-a" hit continue
5 hold ctrl and tap letter s to save
