u/Longjumping-Code-724

I sell on Vinted and I had a buyer from Australia message me to say they had been looking for a bag I was selling and when I wrote their address, please remove part of it as Vinted had got it wrong. I usually use the digital service but in this instance I printed the label which showed an address for an address in London. Thinking it was a scam I cancelled the order and blocked the buyer. The next day I had an email from the buyer's sister asking if she could buy the bag and that she understood how suspicious everything looked but that Vinted has messed up the address. I blocked her and didn't respond. Now the bag has sold again to a third Australian buyer. Are all three buyers linked? What do you all think? Scam or an authentic sale?