As a SuperUser when I have been unblocked and enabled I can login in but as soon as I go to a menu item in Admin I am logged out as a bad person and it only happens on the one site.
The Admin has seen 'enable' change to 'disable' as soon a I login.
We have completely uninstalled Admin Tools including all 'Tables' and reinstalled.
An odd thing happened when we did this and that was when the Admin tried to change my status then he got banned and thus a complete restore.
In all the years that I have been a subscriber I have never seen this problem and have never had to ask for help at this level.
Regards
Keren