I have been attempting to challenge Aotearoa to a duel, and have found that the Duels menu shows 'No Reply' initially, but the challenge disappears later on. Instead of showing me a duel puzzle, the menu reverts to its empty state. On my page, as well as Aotearoa's, it appears as if a duel has been completed, even though I did not even open the given duel puzzle. The duel always appears as a draw.

I have attempted this twice, with the same result both times.