2018 and now 2019 returns lost on TurboTax Deluxe for Mac

I've been using TurboTax for 10 years. Last year, when I went to do my 2019 taxes, it couldn't find my 2018 return. TurboTax always saves it, and then I save a pdf. But ... nothing. No .tax18 file. No .pdf. This year, SAME THING. I cannot find my 2019 returns anywhere and had to go online to irs.gov to get a copy. WHERE COULD THEY BE? I have searched the Trash, all files, can't find them anywhere. When I open 2018 or 2019 TurboTax, the only option is to start a new return. Cannot File --> Open -- there's nothing there. 

 

Please help. What is the point of continuing to use TurboTax if they keep losing my returns.