My Macbook Pro is running Monterey12.76 latest version. That won't load either. The site says try another browser. It also says a mobile app is coming and you can register for notification.
Thanks. Fortunately I've got some time before I'm in a position to actually order a new Morgan and when that happens Mrs FT will inevitably pick the colours anyway (as she did with the current one) but there's no harm in trying out other colour combinations!