@Gargron @renchap The scopes are the same as the one I'm using when an user authenticate with the app as I'm using the same tokens, so the scope are "read write follow push". And I'm sending them in the "Authorization" header, same as for other requests. Sending messages to connect to the user & direct stream. Now my guess is that don't transfert over a redirect? Working fine if I connect directly to the new URL. And was working before the redirect for production app.