how to access tax document on my laptop with Turbo Tax Amend online.

I have 2020 Turbo Tax file on my computer which I can access directly.  When I try to open it in ICloud Drive using the Amend process from Turbo Tax, none of my Turbo Tax files show up and the search for my file always comes up "no file found."  I have tried saving the file from Turbo Tax in a desktop location where I do see it after I save it there.  But the Amend process cannot find and open it there either.    I want to amend this return but cannot access the file with the Amend/open process.