For USA returns you can install it on 5 computers you own. Canada might be 3.
But There is a problem if you first installed the CD. It doesn't connect you to an account you can find. You have to call in and ask for the download and a new License Code. Hopefully you get a customer service person who know about it.
Contact Customer Service
5am-9pm Pacific Time
7 days a week
https://support.turbotax.intuit.com/contact/
What is the Turbo Tax phone number
https://ttlc.intuit.com/community/using-turbotax/help/what-is-the-turbotax-phone-number/00/25632
