Hey ursay, nothing yet but thanks to gordon154's cleverness, I managed to fish the Quote ID for my missing order out of my browser history.  Woohoo!   So I  can provide this additional information:

Quote ID: 4403fffe-8496-4b57-adbf-d5ddbdfa2d88
Event ID: 8a177a76-d3f8-4694-bac0-f426da79ba7c
Amount you need to pay: $495.05

HTH!  Thanks.

I went back in my browser history to the quote page, and if that worked correctly this is the information: