The London 2012 ticket resale website, run by Ticketmaster, is still suspended after a glitch was found at its launch last Friday.
Customers using the website, the official channel through which customers must sell unwanted Olympic and Paralympic tickets at face value, found that the system was slow to update when tickets were no longer available.
"Ticketmaster has been working with [Games organiser] Locog to identify and resolve the issues experienced last Friday, when the London 2012 resale platform was launched. Further updates will be provided as soon as possible," a spokesperson for Ticketmaster said.
The website has today reopened for new sales of Olympic football and Paralympics tickets only.
The window for the initial round of ticket reselling is meant to take place until 3 February. Another chance to resell tickets is planned for after April.
The London 2012 ticket website has been beset with problems from the start, with high demand knocking the site offline during both the first and second round of ticket sales last year.