https://www.ipanemausa.com/seventeen/ -their site has been down for most of the morning, but they just updated that they 6,000 pairs left as of right now and that the issues should be fixed soon. It might take a long time to get through though. Instructions:
Login or register at the iPANEMA USA online store, Select your color and size and Enter promo code 17IPANEMA and your shipping address