Why wont it let me use the child tax credit/other dependent or the additional child tax credit when the look back rule used my earned income of $4,411?

I filed as head of household, used the lookback rule and used my 2019 taxes for the Earned Income tax credit but it won't let me use any credits for my daughter who qualifys (turbo tax says she qualifys for child tax credit but won't let me use it) why is this?