You can edit or cancel your Bid anytime via your Buying (Active Bids) before it gets accepted.
Simply click into the Bid order to update your bid price or adjust the expiration period and click save.
Example: How to edit or cancel a Bid?
Step 1: Go to 'Buying' menu in your 'Profile'
Step 2: Select ‘Active bids’
Step 3: Edit or cancel the Bid you’ve placed in 'Order detail'