HubPages seems to be having SEVERAL technical problems. Personally, I've lost the ability to add links to my hubs and my Amazon capsules are not appearing. When I do go edit the hub, the capsule is still there with the code in it, but it will not show the item(s) and it will not appear in the hub.
Someone suggested that I contact HubPages via this link: http://hubpages.com/help-wizard ... I'll be doing that today to find out what's going on and it they can help. Maybe you could contact them with your issue, as well.