Further info:
Since working on this problem, I notice a lot of spam user creation. Could the site have been hacked and messing with the password encryption?
Also, when trying to do anything with the CB User list (update, delete, etc.), I get "Service Temporarily Unavailable
The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later."
At this point, I think I should redo the CB installation (uninstall / install) but I don't to lose my registered users and their unique CB registration fields.
Is there a way to save this info and redo CB?