Apologies if this has been answered previously.
Ok, I just installed AdminTools Pro.
Followed the Setup Wizard
Assigned a username + password to protect Administrator area.
The problem is that having entered the htpasswd username+password, I can only load the site front-end.
No error message.
I needed to rename the plugin in order to re-gain backend access.
I have read a thread re 401 error.
Is that the problem or a different issue?
TIA