That's really weird...my DS and I used it multiple times for both technical and process questions....typically got an email response within 1 week.
I recommend calling. There is contact number that you can find on the online Application, or you can go to their website and find it. Make sure when you call you identify yourself as a "4 year AROTC High School Scholarship applicant", so that you'll be passed on to the correct person. They deal with all things ROTC, and scholarship applicants are just one piece of the pie.