If you purchased the TurboTax Deluxe desktop CD/Download edition you should have installed that software on your personal computer and started the 2021 return using the TurboTax installed software. There is no reason to use the online editions.
You can download the tax data file from the online edition and then open the data file with the TurboTax 2021 software on your computer.
See this TurboTax support FAQ for saving your tax data file - https://ttlc.intuit.com/community/saving/help/how-do-i-save-my-turbotax-online-return-as-a-tax-data-...
Also note - if you use the software on your computer there is a state e-file fee that is currently $20. This charge can be avoided by printing and mailing the state return. You get 5 free federal e-files with the desktop software.
