For the 3rd Stimulus......NO you can only get the first 2 rounds now on your 2020 return. If you don't get a separate check or deposit for the 3rd one it will be added to your 2021 return next year.
I'm not sure about your 2019 return. I guess you used the Online version last year? You didn't install the Desktop CD/Download program on your computer, right? And Turbo Tax said you filed 2019? When you log into your account what exactly does it say under the 2019 tab? You may have to print and mail 2019 now. And if you didn't actually file it you can add the missing W2s etc. to the original return before you mail it.
Then when you find your 2019 return you can transfer it into 2020 even if you haven't filed 2019 yet. So let's first work on seeing what happened with 2019.
