Hello Corseforever.
According what happened to me , i didn't lose my goods.
I also couldn't see them to the trader but after the issue had been resolved i could see them again.
So i want to think you'll be ok after the problem resolve again.
Am using the trader but i only see old offers that they have been already taken.
i can place an offer and i see my offer to the trader.
I don't think you have to contact support.
and again .... am kinda sure you'll have your missing goods back.
So maybe we all have to wait for a while .
***edit : after refresh i can't see the offer i placed a few seconds ago
I hope i helped.
Sorry if my English are not good.
Am from Greece, don't know very good English