Like it says on the box, the product you bought is TurboTax Online edition. This is not a version you install on a computer and you can't use this code in a TurboTax Desktop software.
To activate your product, you have to use this link and activate your code into your TurboTax online account. When you'll click on the link, you'll have to select between "I have an account" or "Create an account", and then you follow the steps. When the code will be activated and linked to your account, you will be able to file 8 Deluxe returns from your Online account. As long as you stay in the Deluxe version (no upgrade, no other products/services added), you won't have to pay at the end. On payment page, the system will ask you if you want to apply the return to your code.
As my colleague explained to you previously, the Canadian Desktop version can be installed and activated on 3 computers only. It looks like the software you installed on your computer is a US product (5 installations). You should uninstall this software.
Thank you for choosing TurboTax.
