Why do you need to get into the 3rd account? Are you trying to install the program on another computer? That won't work.
If you installed from the CD it seems you can not download it from online now. You can't do both CD and download. See the info on this FAQ
https://ttlc.intuit.com/community/installing/help/i-bought-the-cd-but-my-computer-doesn-t-have-a-cd-...
So you need to call in to get the download pushed to your account.
Or try copying the CD to a usb flash drive. See SteamTrains post here
https://ttlc.intuit.com/community/taxes/discussion/why-can-t-i-install-turbotax-on-my-laptop-via-dow...
It says...
You can download your software directly from TurboTax. But, keep in mind, you can't use both the CD and the download — you must use one or the other.
And....if the CD has already been registered and installed on another device, you will not be able to switch to the download product or you may receive an error message that says, "This product is already associated with another account."
So you need to call in to get the download pushed to your account.
