I had this issue with the online version and it plagued me for 1 year at least. No solution at all, it is ridiculous. I got in trouble for months because I was late, I just could not find a solution at all and could not do my taxes because of it. I wasted so much time, unbelievable. Finally I could print the PDF after the software support for that year expired, and I just mailed it.
The next year I could download the software after I paid for it, and then print the PDF and send by post - again no online submission worked at all. So if this helps at all, try the downloadable version (where you pay before wasting your time) and then print the PDF and send it.
That said, this company is horrible. They do not even read these messages and do not bother fixing problems with payments, for years! You would think this would be in their best interest, but no?
