Buyer won an auction in August and never contacted me – I wanted to cancel, and instead the stupid advert loading made the whole webpage shift when I was selecting the menu option and it chose Mark as Paid.
It used to be possible to unmark this. It's bad enough that eBay's UX appears to be turning into Fisher Price levels of simplicity/lack of control, but how on earth can they make a seller-acted 'mark as paid' permanent when it can be a mistake?