I disabled them by changing the main.php file to main_disable.php in the plugins/system/admintools/admintools folder.
One of those sites is now selectively failing to allow event registration using DT Register. I'm at a loss as to what the problem is - I have over 20 other client sites running it just fine (including those running Admin Tools), and many people can register on this site - but others cannot.
I conferred with DTHDevelopment several months ago on this, but they could not find the cause (I've submitted a new inquiry to them to see if they might have anything new to help).
So far, all I've done is to replace the .htaccess Admin Tools version with the default .htaccess. I'm awaiting a response from the customer to see if that helped.
But I'd still like to completely uninstall Akeeba Admin Tools from this site because of the secret URL issue, and maybe reinstall it at a later date after this DT Register issue is resolved.
I could not find anything in the documentation or on your website for uninstalling - maybe it's simply uninstalling it from the Manage Extensions, but I thought I had read somewhere that it's not recommended that we do that - I don't want to make things any worse.
Thank you for any assistance you can provide.
Ernie