How to enable the new discussion experience

Trying to get the new discussion experience to work, but having some trouble with the Pages & Resources mfe. I have follow instructions here:

The new menu-item is showing, but the URL goes to this: /course/None and that can not be right. Does anyone have an idea about what I might have missed. PS: I don’t have server control – just /admin-access. Server-admin says: Seems as if the page on GitHub is not found. Has the plugin been removed?