Doesn't work

This extension does not belong to Anytype, and might be harmful.

Does this extension work? I installed this on both Linux and Windows.
- Anytype is running in the background.
- I go to a webpage I want to save.
- When I click on the extension in Firefox, all I get is a small popup window with a few nested empty boxes with scrollbars on the side.
Am I doing something wrong? What am I supposed to see?