That is exactly what happened. They didn’t have a live stock tracker and was selling things they didn’t have on hand. Most orders that are still unfulfilled is because they are on backorders, could be one or many of your items.
I had the same issue but luckily it was a quick turnaround and my items are on the way.
On another site, there was a warning about a 5-10 day wait due to backordered items but they are still going to be here quicker than NR’s. Pretty disappointing. People are going to say it’s a sale and they were overwhelmed but so is every other vendors out there but they seem to be okay getting their things out. Received every other orders elsewhere long ago.