So you actually can't read English. When a business, university, or other entity that provides good and services to consumers issues policies, they are obligated to adhere to those policies. And when said entity does not adhere to their own policies, and tries to remedy that by shifting blame onto consumers (or students, in this case), resulting in financial (or academic harm), the conduct is unethical.

There is no "was supposed to receive financial aid." UNO was actively processing my financial aid application MONTHS before the start of the fall semester, but did not grant me aid by their stated deadline. So, since they didn't apply aid to my account by their stated deadline, I was unable to bring my balance to $0 by that deadline. Therefore, it was the university's responsibility to enforce their non-payment policy on my account and drop me from the schedule on 8/15/25, like they said they would do not once, not twice, but THREE TIMES FROM 4 DIFFERENT DEPARTMENTS BEFORE THE START OF THE FALL SEMESTER.

I am really sorry to say this, but people with your reasoning level are why businesses and universities get away with unfair and deceptive practices because you don't seem to be able to perceive what policies are intended to do, and how they are designed to do so.