Not working, no clipping, returns to login screen

[mrmahon]

I tested it on several browsers, including Chromium, Vivaldi and Brave, all on Windows 10.
Even after getting past the login screen, the extension doesn't seem to clip anything - no matter if it's just the selected text or whole page, chosen from the extension icon menu, or from the context menu after selecting text.
Clicking the extension button returns me to the login screen.