Sorry, To use the Online version you would have to start over in a new online return and pay for Online separate from the Desktop program. You can't apply the Desktop CD/Download purchase to Online. Then try to get a refund for the Desktop program.
Start an Online return here,
https://turbotax.intuit.com/personal-taxes/online
If you used the Desktop program last year here’s How to transfer into the Online version. You need to have the prior year .tax2021 file on your computer. Expand the link if you used the CD/download last year........
https://ttlc.intuit.com/turbotax-support/en-us/help-article/import-export-data-files/transfer-last-y...
Or here’s How to switch and transfer from the Desktop program into the Online version........
https://ttlc.intuit.com/community/tax-topics/help/how-do-i-switch-from-turbotax-cd-download-to-turbo...
