There are 2 different Free versions. Turbo Tax Free Edition and the IRS Free File website. If you don't qualify for the Free File website you might be able to use Turbo Tax Free Edition. Although the Free Edition is limited in other ways.
Why didn't you qualify?
See the first paragraph - no upgrades are available for Free File website
https://ttlc.intuit.com/community/choosing-a-product/help/what-s-the-difference-between-free-file-pr...
You need to set up a new account and new username and password. But you can use the same email address for 5 accounts. 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...
