File won't Open

Why won't TurboTax open a file it created after I quit and wanted to finish it later?

Why won't TurboTax open last year's return (same error msg on.tax 2020 or .pdf) to lead me through this year's return when I can open the .pdf file in my own PDF software?

These same errors have happened for the last three years and have led to retyping the whole return in twice and I have spent at least 3 hours with the support line.  Nothing has been fixed.  Maybe we need the file format to see what is happening.  Very frustrated and am thinking about canceling my advantage plan for next year.

Mike Price