I'm fairly new to Vinted so not sure if this is an on-going issue, but I've had 3 items in the past week I've paid for that the seller didn't ship. I get the money back so not out of pocket (although have a limited budget so don't buy other items in the meantime) but it's just really bloody annoying when you think you've purchased something, wait for it to arrive only to be told a week later the order is cancelled.