User Activity

In all items which I sold in November in Order Detail status of shipment - "delivered" on the same day which I sent the packages.Shipped on November 20 - status - " delivered" on November 20.What is this - is this Glitch of software? Probably this is...
I shipped package to Canada by Registered mail with tracking number. I don't know why, but Order detail saying that package delivered at the same day on November 20, when I shipped item. I provided buyer with tracking number , but he opened case that...