I still have a weird feeling they're connected - I have tried every conceivable way to pull up my order (w/shipping estimate of Oct 14-21) and it comes up just fine. Others with more favorable shipping dates can't get their orders to come up. Hmm.
My rose gold 7 has a delivery date of 9/16 and I can see my status using the order number just fine. Doesn't make sense that only 7 pluses with better delivery dates would be the only ones crashing the system.