A number for what? Did you use the online version or the Desktop CD/Download program? They are different. If you can't install the Desktop program you can use the Online web version.
For 2022 returns you now need Windows 10 or Mac 11 or higher
2022 Desktop System Requirements
TurboTax CD/Download 2022-2023 System Requirements
If you used the Desktop program last year here’s How to transfer into the Online version, expand the blue link if you used the CD/download last year
If you used the Desktop program before you may notice several differences and not like the online version. It has less features and no Forms Mode. You can only do 1 return. Your return is only saved online so be sure to save both the .tax2022 data file and the pdf file to your computer when you are done. In case you need to amend in the future or if you need a copy to get a loan or something. You might not be able to access your online return when you need a copy.
Start an Online return here,
Last year I bought the 2021 version of Turbotax from Costco. When I brought it home and loaded it onto my computer I realized my computer was too old. I have the same computer now. I contacted Turbotax support and they told me to complete all of my taxes using the online version of Turbotax and then contact support and they gave me a number to put in so I would not get charged a second time.
I am wondering if I should do the same thing.
Well obviously don't buy the CD or Download program again. Just log into your Online account and it will transfer 2021 to 2022. Do you know your Username and password for Online?
Start an Online return here,
https://turbotax.intuit.com/personal-taxes/online