Told I owe money back on my benefits after 5 years as a store manager

After 24 weeks of benefits I got a notice saying I must repay some of it. There are 5 people counting on me, so I am trying to be careful. I did not notice any errors at the time.

Collect your pay stubs and certification records for the weeks they name. Mine showed the error was a date mix-up.

If you are unsure, free legal aid in your area may help for this kind of notice.