i don't know if that matters or not, because they were closed on monday and I still got confirmation for an order from black friday at 4:49 pm CST. regardless i would just hang tight a little bit.
Idk if he is the creator of grailed or what but there is a dude on supreme's Reddit that is associated with grailed. Some dude got scammed and the guy commented on it and took care of everything. Try seeing if there is a Reddit for yeezys and ask there or try asking in the sup Reddit