Overpayment letter from the unemployment office (Louisville)

After 13 weeks of benefits I got a notice saying I must repay some of it. Any experience at all would help. The letter mentions an appeal window and a repayment plan. Has anyone disputed one of these?

Read the letter for the appeal deadline and act on it, even if you think you will end up repaying. Then ask about a payment plan.

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