Nasdisc support the ability to modify, delete, or renew bids via the Bids page.
To modify or delete a bid, navigate to the desired item in your Bids page and select either the pencil icon to edit, or the trash icon to delete.
When editing bids you are able to change the price, condition, or duration of the bid.
To renew an expired bid, click the "Expired" tab on your Bids page, navigate to the bid you would like to renew and select the green "refresh" symbol. This will re-activate an expired bid according to the same parameters as the original bid.
From this page, you can also delete, or edit and re-list any expired bids.