i haven’t received a litter or anything yet… did I just not qualify?
Sounds like you didn’t get into your major.
Call the school and ask what it means.
This type of thing could mean:
a. The school does not directly admit frosh to that major.
b. The major is filled to capacity, and applicants with higher qualifications than yours were admitted to the major, but you fell below the cut-off.
In either case, you may be admitted as an undeclared student. Check to see if your major at the school requires a high college GPA or competitive admission to enter after enrolling.
You should ask the school what the change means specifically for your application to that school.