Problem Leaving Feedback for Buyers

In our other store we have 9x listings showing up as Piad & Posted but that we have not left feedback for the buyers. We "religiously" make sure we leave FB for our buyers. We always leave it on the day we mailed out the item.

 

The dates go back to early December 2013.

 

On every one of them when I try to leave the FB I get an error message that tells me FB has already been left. The little graphic on the list shows as greyed out meaning no FB has been left by us.

 

Anyone else see this problem?

Anything we can do to fix it?