Same thing. Should still have the Live Receipt link at the top of it, which will take you to the page that has the current Shipping section. You can also try searching for your original receipt which should have the Subject line "Your Receipt from Underworld", and again, has the Live Receipt link at the top.
Asking Topspin won't get you anything, as Underworld is handling fulfillment of the physical product. Topspin will simply direct you to contact UW.
If you still can't find the Live Receipt link, you can e-mail UW at
hello@underworldlive.com, which is the inquiry address for shop fulfillment.