Online Bidding for Silent Items Health Check
What is the issue?
Your silent auction items have different settings for the 'participate in online bidding' field.
Why is this a problem?
This is not intrinsically a problem, but it is very unusual.
Generally all the silent items should either have online pre-bidding enabled, or none of them should.
What do I need to do?
You can change the 'participate in online bidding' value on the item details page for a single item or via the item list for multiple values. Using the 'group' filter dropdown on the item list will help you isolate just the silent items.