There are some known issues with the Ban Users feature.
To start with there is a bug in the error handling. The effect is that in case of an error only half of the error message or even no message at all is displayed …
In case of an invalid ip address you will get:
166.137.136-78 is not a valid address in the ban users box.
(or no message at all) but it should be:
Note that the ban users feature has been disabled until the following errors are corrected:
166.137.136-78 is not a valid address in the ban users box.
In order to get the full message you need to implement a small code fix:
– First make a copy of the wp-content/plugins/better-wp-security/modules/free/ban-users/class-itsec-ban-users-admin.php file.
– Then edit this file and search (only once) for:
$no_errors === true
and then replace true with false. After editing save the change to the file. Do this only for the FIRST search hit …
Then retry. Fixing this cosmetic bug might get you back on track.
dwinden