Activation says License code is invalid error code 603. 

Error 603 usually means that you are entering the code in the wrong version or that you have already activated the code. You possibly have purchased TurboTax Deluxe Online version and if so- you simply need to go here to activate your code turbotax.ca/activate.  If you have already done so then please simply log into your TurboTax online account. 

Thank you for choosing TurboTax.

I entered my 16 digit licence code accurately. It was accepted and sent me aa message on my phone with a 6 digit numerical confirmation code which I entered accurately. I was xent to the locin screenand was asked to enter my 16 digit licence code again but it wouldn't accept it. What do I do now? 

@Hardnose7 

Please contact our phone support team at 1-888-829-8608 as they will be better able to assist you.