Ticketmaster's president has admitted to "stuck transfers" following a ticket delivery failure last Friday, raising new concerns over the company's reliability. A separate report pointed to the disruption as proof the risk that comes with relying on one dominant ticketing provider.

The trouble comes as a reseller listing a Bruno Mars ticket said she was taken by surprise by the fees Ticketmaster added on top of her listed price. Rival SeatGeek, meanwhile, launched TourIQ, a forecasting tool aimed at live event sellers, presenting itself as a competitor at a time when trust in Ticketmaster continues to erode.