"… I reread the admissions website and discovered his supplement was due before the application. He now had three days to finish what he thought was not due for almost three weeks.
In that moment, we both came to understand how a simple error could have an outsize effect on admissions.
Here are other mistakes to avoid, according to college admissions officers around the country:
• Telling your story." …
https://www.columbian.com/news/2019/sep/22/what-college-applicants-get-wrong/