Buyer (?) contacted via email

I got an email from a totally random person with a question if an item is still available and ”I am wondering in this case I can click the ”buy” button”.

It was a from private email, not a notification from Vinted about a new message in the app. Just the question, no links, nothing else.

WTF going on? I thought you can’t contact people via email. Do I need to start worrying?