Did you start 2019 this year in 2021?
Online is only good for 2020 now. If you tried to use the Online version for a prior year you should try to clear it out so it's not accidentally filed as a 2020 return or transfers into next year.
https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-clear-and-start-over-in-turbotax-onli...
Or you can leave this account and set up a new account to do 2020. How to start another return in the Online version
https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-start-another-return-in-turbotax-onli...
FYI - and when you file 2020 enter 0 for the 2019 AGI since you are filing 2019 late.
