I just posted below on another thread..
Online Version SOLVED: Mine was also rejected as I had "Coronavirus-Related" in Line C. In order to remove it, follow the instructions below:
1) Go back and Uncheck the Box for Coronavirus, then proceed to the next page where it makes you select the FEMA code
2) SELECT any random FEMA code and continue on
3) I proceeded as if I was going to file (but didn't) and on the last page where it gives you chance to review forms --- review and should now see the FEMA code in Line 3 on Form 8915
4) Now go back to your tax form and revisit the FEMA code, now select the BLANK. Go back and check the BOX
5) Proceed to file but check and confirm Line 3 is now BLANK.. if so... FILE
