I called Stampin' Up! and we figured out the problem.  The class page is now "live" which is why the registration page isn't working anymore.

This is the link you really want - https://events.stampinup.com/worldcardmakingday

There is a countdown timer on it for start time.  Look for your local time of when it starts.

Thank you for your patience!!!!!!!!!!!!!!! and enjoy the event!