first and second stimulus payments

I did not receive first and second stimulus payments for my dependents.  According to taxes filed in 2019 I had 4 dependents. I received 2400  for first stimulus and 1200 for second stimulus. both for me and my spouse. I thought I would be able to recover the dependent amounts but according to turbotax (which has my 2019 tax returns already), my payments were correct. can someone please explain this to me.