From where did you buy the product? Did you buy it directly from Intuit online, or is it a retail purchase?
To be clear, you can only install the desktop version of TurboTax; you cannot install TurboTax Online.
If you have purchased a wrong product for TurboTax, you can submit an online Refund Request and purchase a correct version directly from TurboTax website.
Thank you for choosing TurboTax.