Did I miss your answer to the question I asked?

Surely I've checked it out with clean profile (and in Chrome.) Edit mode isn't working for me.

My suspicion is ...
Wrong. uploaded script is un-editable too.

My suspicion is that Marti uploaded his script from localhost but I conversely have inserted my code in online editor.

The problem is that the Edit Mode button refers
to nonexistent URL: https://openuserjs.org/script/myscript/edit

Kinda magic. And I can only look at a 404.

When I click on "Edit Mode"
I get
"The file or folder was not found."
confirmed.
I see no way to edit my script description.