Online bidding is open until 9PM March 21st. In order to bid with mobile bidding, you will need a ticket to the event or a free "online bidding ticket" if you are not attending the event. Tickets and raffle tickets are available on the Ticket Purchase page. Once you get your "online bidding ticket", you will receive an email with the mobile bidding link.
This page is just the auction catalog, the mobile bidding happens on a different page.