u/GeneralMotorsV8

Hey guys, I have a super old computer that I cant get Win11 on and this year it wants me to use Turbotax Online to file. I bought the Deluxe from Costco which it came with 5 federal filings. Last year I filed my own return + my parents on the Desktop app but this year it's not letting me install the Desktop version because I don't have Win11.

So my question is what is the process for me to also file my parents return? Can I tie this license code to their account also? because as far as I can see my account I can only file 1 return and I can't start another return? so I'm a bit confused on what to do.

thanks!