Just a quick note- I’ll take a closer look if needed. But it sounds to me like- the checkbox on the admin login only shows if the cookie isn’t set. Sounds like you’ve got cookies allowed- in which case it won’t show because it’s moot (and unchecking the box would not actually unset the cookie, so makes no sense to show it).
To see if that’s what’s happening, you could delete all cookies- or just the cookies_allowed cookie- and the checkbox should show back up. And you won’t be allowed to login w/out checking it.
Like I say- happy to take a closer look, but I suspect that’s what’s happening. That checkbox only shows for folks who haven’t allowed cookies.
And now I am off to add a link to the docs from the module download page- sorry about that!