No one "paid" the loan, the debt was sold to a private creditor and OP's account was then considered settled in the eyes of the DOE. They can't delete the account in order to keep an audit trail, so the amount owed is adjusted to zero.
Also known as Flow - the mental state of operation in which a person performing an activity is fully immersed in a feeling of energized focus, full involvement, and enjoyment in the process of the activity.
Unfortunately it appears as if the original image was just stretched to a larger size, but if that's the case the resolution you're looking for just may not be available.