After you file

@anthro888 - here is the biggest source of confusion.... did you file joint?  if so, there were TWO letters sent to you (one to you and one to your spouse), you were to ADD these two letters together and enter the result in TT.

 

In other cases, the family only received one of the letters and didn't know there was really a 2nd one.  

 

The point is you had to enter the advance  you actually received, whether you received the letters from the IRS or not 

 

From many posts I've seen, many failed to do that.