Overpayment letter from the unemployment office - 21 weeks in

After 21 weeks of benefits I got a notice saying I must repay some of it. There are 14 people counting on me, so I am trying to be careful. The letter mentions an appeal window and a repayment plan.

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

I asked for a waiver and a plan in the same call, and they gave me both forms. It was less scary than I expected.