Hi Violet, not sure I understand your question.
I was in the US when I received the letter with the appointment for the fingerprints/biometrics to be done. The date was late June (don't remember precisely) but I was booked on a flight back to France for mid-June.
That is why I did not go to the appointment for the biometrics (late June, since I was in France) INSTEAD, I went to a USCIS office in my county, no appointment, as soon as possible. I just walked in. Wait a little and they did the biometrics.
Hope that helps a little.