Are you an advantage member and forgot your log in ?
https://ttlc.intuit.com/questions/1901328-forgot-your-turbotax-advantage-login
New this year …. You get a code to install the CD which will also let you download the program so you don't need to call in anymore if you don't have a CD drive.
Find the License Code
https://ttlc.intuit.com/community/tax-topics/help/i-can-t-find-my-license-code/01/855902
How to download 2019
https://ttlc.intuit.com/community/installing/help/how-do-i-download-the-software-i-purchased-at-turb...
How to install 2019 on Windows
https://ttlc.intuit.com/community/refund-status/help/how-do-i-install-the-turbotax-software-for-wind...
How to install 2019 on Mac
https://ttlc.intuit.com/community/installing/help/how-do-i-install-the-turbotax-software-for-mac/00/...
And, if using a Windows computer...you can't download it using IE11 (no download button). Use either the EDGE or Chrome browsers.