If CRA did not receive your tax return you will need to sign back into your TurboTax account and once in your return- on the right-hand side scroll down till you "File" click on it you will then continue until you see "File your return". Click here to see step by step instructions on how to NetFile your return successfully to CRA.
I have the same issue. I have purchased the downloaded version every year for the last ten years and have all the saved files as well. In this case I have the tt19 file but I no longer have the 2019 Turbotax program (or any further back than that). I only have the 2020 version. Do I really have to re purchase 2019 Turbo to re send an already completed return? Please reply to [email address removed]. Thanks. Dave Badovinac.