I was just on chat with etsy about this same issue. I am also on a iMac and pc with safari and chrome browser. This is the first time this has happened that I am aware of. I only noticed because I had to look up an order that was shipped yesterday and I could not find it anywhere. I had to go in to my payment account to find the order number and search it that way. It did come up that way but still was not showing in completed orders. Technical support is supposed to email me.