When calculating stimulus it says 1200 is the full amount and I'm good to go. Yet when I use Turbo tax calculator I should also be getting the second stimulus what gives?

I should be getting the $600 stimulus but because I didn't have to file taxes in 2019 so they didn't direct deposit the $600 second stim like they did the first one. It says to claim it under the Recovery Rebate Credit for 2020 taxes. So, in total I should have gotten $1200 and $600 but turbo taxes programming is claiming $1200 is all I should be getting. I dont understand how Im supposed to get the second $600 stimulus if its not recognizing it.