Account now noted as delinquent? Need help on disputing

As the subject said - I was recently behind my payments due to being laid off. I called Nelnet a week ago and they approved my forebearance and I was ensured that my account was 'current' and I did not need to pay anything at the time. Last night I received an email from the DOE noting that I was delinquent and today Credit Karma informed me that 5 accounts (from 1 loan given at the time lol) were all delinquent and my credit score has plummeted. Like scary bad!

Has this happened to anyone? Can I dispute this and if so, does anyone have any advice? Is this related to Trump trying to shut down DOE? Would love any insight!