I used TT2023 to prepare and file my tax returns as I have for decades. However, it is missing from my laptop. Can you help?

when i click on my return, and it opens, nothing is there.  It asks me to begin as if I've never used it before.  I do have a pdf I saved along with the .tax2023 version so I know I'm not nuts.  But nothing is on the .tax2023.  Freaking out.