If you have a bidder who purchased a ticket and they are not showing up on the guest list you can easily add them to the guest list. This can happen every now and again. How to add the ticket purchaser to the guest list select the bidder under the "Bidders" list. Once you have the selected the bidder you can go to the purchases tab. There will be an icon next to the purchase that will only display if the ticket is not showing on the guest list. When you select this icon it will populate the bidder in the guest list.
Below is a break down of this process.
Select "People" > "Bidders" > Then select the bidder that is not showing on the guest list.