Cannot find my endnotes - Endnote text is either hidden or locked

I have placed a Word document with 71 footnotes into InDesign, but I want to have them as endnotes and not footnotes. The footnotes appeared correctly when I placed the document, and I "successfully" converted them to endnotes (the references are still in place), but I cannot see the endnote text anywhere. When I right click on an endnote reference and choose “Go to Endnote Text”, I get the message that the endnote text is either hidden or locked.

If you are familiar with this feature in InDesign, can you help me find my endnotes and make them appear? Thank you!