Below is an explanation of all of the order statuses you will see in Declined, Submitted, and Arriving Orders within the Ordering section of the app.
A. Pending
A submitted order that the vendor has not confirmed or declined yet.
B. Queued
An order that a vendor could not fulfill at the time of confirmation, but is queued for future fulfillment by the vendor. The attached Part-Declined or Declined order is the original order.
C. Confirmed
An order that's been fully accepted by the vendor and all items ordered will arrive.