You can request a refund for the product that you don't want, and then purchase the one that you would prefer: https://turbotax.community.intuit.ca/replies/2647900
When I went to the link for the online version, it only referenced the charge for actually filing, nothing related to my online purchase.
You can also request a refund via our phone support team: https://turbotax.community.intuit.ca/replies/3152013
I tried that and was told too bad so sad. I only got to do my return and my wife's now I can't do my parents and kids without paying again because I did not know this was the online return. I just thought the system had changed. I have paid $40 and only get to do the 2 returns. No w I was told I must pay AGAIN to do the rest of the returns for my family. Not helpful.