I haven't combed this thread. Unless notified otherwise, don't worry about your order not showing up or looking weird online or in the app, assuming you signed your eip and got a email with verifying that. If your order is canceled, they will text you or email you.
Your best bet is to monitor ups my choice.
My wife and I preorder the note 7, which our iphone 7 pluses will replace. The app/ website always looked weird and blank on the order details. It still has the changed, despite have the phones for a while now.
UPS my choice alerted us to the incoming phones a full 2 days before tmobile did.
Anyway, reviews are popping up now. Go read!