Document text replaced with ÿÿÿÿÿÿÿÿÿ what do I do?

I’m new to all this. I don’t know what to do to get my libreoffice document back to normal.
Please help

Read these guidelines and ask a good question.

Generally, the above means that the document is broken. However, without relevant details it is difficult to advise further.

I don’t know what happened.
It is the same docx as my other documents. All others open fine but this one opens as yyyyyyyyyyy.
Is there a way to repair the document in libreoffice?

  1. Do not work in docx or other working formats. Use only ODF and only after you have finished, export as necessary.
  2. Unless you share the file, there is no way to see.

Also look there: [Tutorial] ODF repair tool (View topic) • Apache OpenOffice Community Forum