Every summer I get calls from parents wondering when the financial aid office will let them know about scholarship and financial aid awards. They ask this because they assume that colleges send a letter or a direct email to students about awards. This is not always the case.
More commonly, colleges post awards in the student portal on their website. The student is expected to check the portal regularly to determine whether they have been accepted, whether the admissions or financial aid offices need anything from them and how much money they have been awarded. Other important functions in the portal include being able to register for classes and pay tuition.
Tell your kids to make sure they have accessed their student portal as soon as they have accepted admission, set an id and password and are monitoring admission and financial aid progress on their account. This is truly an electronic case of "you snooze-you lose".