I think your issue may be with FedEx not Tesla. They used to be awesome, but ever since the pandemic (maybe longer), they've been the worst, by far... A few months ago, I bought some phones from Google that were shipped by FedEx... FedEx showed my package as "Delivered" three separate times... Each time, I pulled up video footage showing no such delivery, and each time, FedEx said they don't know why the driver marked the package as delivered, as they said it never left their distribution hub... On another occasion when this same thing happened, they said I could go to the hub to pick it up... So I went, and they didn't know where the F it was... They said it could be in one of two different hubs, but didn't know which... They also refused to give me the phone number to the hubs... I managed to get a number from one of many calls... When I called it, the person that picked up was agitated and asked where I got the number... Apparently, it was the cell number of one of the shift managers at the hub.
On a side note, I'm surprised you waited so long to get your accessories, lol... I ordered mine right after placing my order for the Y, so I had everything ready to go, WELL in advance of getting the Tesla, lol. Maybe too soon, hahaha, I still have to find the trunk mat I ordered, I seem to have misplaced it, haha.