I simply tried re-entering it a few hours after contacting tech-support. More specifically, in the online tool I started over (I did this to down-grade the version of Turbo-Tax I was using. I had upgraded it more than I needed in hopes of another way to enter the 1099-NEC) and when I got back to entering the 1099-NEC, it worked. I would go back and make sure it still works, but I have already filed.
