Murphycpcu, also make sure you use a different email address for each person you are applying for to lessen the chance of glitches. The government will send you an email each day asking you to report your temperature, which I think is why unique email addresses for each traveler work best. And if you are getting down to the wire and do not have your pre-approval letter, one of the other threads on here had a number people were calling. We received ours within 60 minutes for one departure, and within 3 hours for the other. Good luck!