Notification Error
 

Currently Running: Version 3.8.7

Ran into an issue with the notification system. We had an annoying bot the other day that went profile posting. I banned it, deleted all of it's posts, but for some reason, the system still shows: Your Notifications: 4,294,967,295
And when you click the drop down it shows this:
Unread Visitor Messages 4,294,967,294
It's forcing all new profile messages into the unapproved area and I have no idea how to fix this issue. Any help please?