For Bidders: If you placed a bid and need it removed, you will need to contact the Auction Organizer to remove the bid. From the Auction main page, click Help at the top of the auction page and select "Contact Auction Organizer".
For Auction Admins:
If there's a bid placed by accident, you can retract that bid.
Please follow the below steps, from inside the Auction Dashboard to open the bid history for the item.
1) Click "Auctions" on the far left > Click on "Manage Auctions"
2) Click on the Name of your auction.
3) Click on "Items then All Items".
4) Click on the Blue Number “Bids”
5) Click the Red X to remove bid.