I have similar issue, created my store yesterday, added gachas to it, got one sale today (yay) and now 40 mins or so ago, all listings , on the webpage, is gone. I am using firestorm to add the listings, and in the marketplace listings dialog in the viewer they are all there. The item i sold i can view directly if i go to the url. But it is not showing in my store. i had many items up there. So i also want to know what happened?