IRS took recovery rebate off of my return for dependent born in 2020

I got the first two economic impact payments for all of my other children and myself and my spouse. I had a daughter born in july 2020, so I know she is eligible and turbo tax software calculated that into line 30 of my return. It stated I was eligible to receive 1100 recovery rebate credit. The IRS has approved my return but says we are not eligible for the recovery rebate.

 

We have never made over the income limits, none of our dependents aged out as they are all 12 and under. Tax advocate says he doesn't know why they took it off and that I will have to appeal the IRS's decision to get it now. My question is what is the appeal process?