Access to Libre Office files

maybe I can help -

          did you perchance save this document in an unknown format? -
         there are numerous extensions of which you can choose, but some
might not work with your particular set-up/machine.

          do you still have the original document?

          do you have a .txt document on your machine?

       If you somehow saved it to an unknown format, possibly you can
re-save it correctly then all might be a-ok.

       If you open it in a .txt document, then hopefully all you would need
do/re-do would be to reformat the document.

       If you have the original document, then you could just start over.

Cc:
Good morning.

I can't get seem to get into my Libre Office documents today. I can open
other documents and can get the internet. Can you suggest anything to
resolve this, please? I am working on a transcript of a meeting which I
would like to finish and circulate as soon as possible.

Many thanks

Gareth Walters