Hello Marco, just go to the website of the consulate in San Diego and send them an email and they will confirm your appointment, just send them that folio number and once they answer you, you can print that information and it serves as proof.
Good morning, look, I made my appointment to renew my passport in Sandiego, I went with a person who is dedicated to reviewing appointments for passport and visas and he helped me for the appointment in Sandiego, it was very fast, the staff is very respectful and friendly when there are 15 at most minutes throughout the process
Where you processed your appointment, they must send you a "Confirmation of Appointment" issued by the Consulate. Without that paper they will NOT let you pass the line.
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