It said in big red letters: congratulations, you’ve found a bug. (and so on)
The last puzzle of the endgame, capture dead stones, don’t work.
I’ve sent a “crash report” as instructed on the site, but I wish to also point that out here in the forum as I don’t know to what email to send it.
PS. I’m sorry, but I think this is in the wrong forum. It should be on “feedback”. I’m still new to the site.