The Directorate of Admissions goes to great lengths to explain the application procedures. 1. Letters are published on the portal. 2. Instructions to Candidates are posted on the portal 3. Candidates are assigned a counseling team that the candidate can contact. Your deadline was prominently posted on your portal.
As an adult, you won't be told what to do anymore. Following directions and paying attention to detail are important. You are expected to do your research; to read the literature; and to pay attention to detail. The adult world still relies primarily on e-mail not texts. Missteps like failing to read a letter posted on your portal (or not reading it carefully) can create a negative impression right off the bat. This is how the adult world works.
As an aside, I was just talking to an ALO friend not but 10 minutes ago. They were incredibly annoyed that a candidate that they were going to interview took two weeks to get back to them. Then in trying to schedule the interview the candidate gave excuses for not being able to meet on the many proposed dates--"I'm all booked up." Finally, they agreed on Veteran's day. The candidate has no idea how this disrupted the ALO's plans for the day. The ALO has a deadline to get the interviews accomplished. They are doing their job in a volunteer status. What do you think the ALO's first impression of the candidate is going to be? What do think anyone's impression will be of a candidate if information is prominently posted and ignored? This is how the adult world works. This may sound harsh, but this is how the adult world works.