Can't edit my word doc, why?

I download LibreOffice and did my newsletter using a word document. After I saved my file I went back to it to add something, but it won’t allow me to do any editing? What’s wrong?

Make sure that the button below is pressed.

This button allows editing in the current document

There is nothing Showing in this post.

It won’t allow me to even view the document as a live doc. ??? I can’t get into it to see that button or close etc. My only option is to shut my computer down without closing and lose it all.

where is that button located