Ticketmaster's president has acknowledged "stuck transfers" following a ticket delivery failure last Friday, raising new concerns over the company's reliability. A separate report cited the outage as evidence the risk that comes with depending on a single ticketing platform.

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