I had a similar problem trying to exclude US Debt from my part year MA return. TT Online was incapable of doing it and I was steered to the desktop version. I ended up changing to other tax software that was free for federal and $9.95 for the state which worked perfectly.
Turbo Tax's refund policy is overly strict when something goes wrong with the online version, you have to switch to desktop version first and show it still does not work. If the product you buy is defective for its stated purpose you should be able to get a refund but evidently TT does not agree.
