When Jeremy replied on the forum I got a notification with a link to the thread.
Visit Topic to respond.
But that link is broken. It leads to a .io domain (my browser: “can’t connect to the server at mail-metrics.exercism.io.”) and when I replace the .io with .org manually I do not get to the forum thread (my browser: “400 Bad Request”).
Maybe the forum is still configured to send out .io links?