First off, try to use UPS instead of FedEx
Second - send Bitmain support an email or open up a ticket (I forget how it works there) about your order and they will take care of it within 24-48 hours. 6 days is an eternity to wait. Good luck
I've had no hiccups with FedEx to-date and I don't think it's a shipping issue. Something in Bitmain's system caused my order to be flagged inappropriately even though I paid in full within the 30 minute time limit. I contacted Bitmain support about 4 day ago with no response, though I think they are backlogged.
If you read the banner on their website it actually says they are all out of the office till the 26th so i wouldn't expect an answer till after that.