I entered a consular appointment and the United States option does not appear in the location, what can I do in that case ???

I say in the Consular Appointment application, in the location it only gives for South America, Asia, Europe, Central America and Canada and does not give for the United States

In the Consular Appointment application, in the location it only gives for South America, Asia, Europe, Central America and Canada and it does not give me ACCESS FOR THE UNITED STATES

It's the. 90 everett bird 3rd flower. Chelsea MA