How do I amend my tax return when I cannot find it on the turbotax website?

I followed this link https://ttlc.intuit.com/community/amending/help/how-do-i-amend-my-turbotax-online-return/00/27577

and could not find my 2019 taxes. I did my 2019 taxes through the software I downloaded from a CD purchased. 

 

Any help would be appreciated. Thank you!