@Tingman2 To activate TurboTax Deluxe Online (DIY), please go to turbotax.ca/activate to use your code before you start your returns. You can see this TurboTax FAQ for step-by-step instructions: In TurboTax Online, how do I use a prepayment code? 

Please note that you can only use the code once in one account. Using the code again will give an error message.

Thank you for choosing TurboTax.

The program I bought at Costco (Deluxe Online Edition) does not have a licence code. There is only the Activation code. Therefore, I cannot activate the program.

@rjkOttawa 

If you have bought TurboTax Online, you will get an Activation Code, not a Licence Code. Please go to turbotax.ca/activate to use your code before you start your returns. You can see this TurboTax FAQ for step-by-step instructions: In TurboTax Online, how do I use a prepayment code? 

Please note, the codes for TurboTax Online will not work with TurboTax Desktop & vice-versa.