I strongly suggest you remove that modification from your board, as it is vulnerable to SQL-injections.

If you still know which modification you are using, then please send me a PM with the link to the modification thread.

Most likely the modification you mentioned. I strongly suggest to remove that modification, as only changing 1 username does not protect your board.

i think this modification caused the error
https://vborg.vbsupport.ru/showthrea...=149167&page=9
but how may i remove it
i can`t log into my cpanel
it refuse to sign in because of data base error

please help me

To troubleshoot this, please remove any hacks and disable your plugins, then see if you still have this problem.
Note: To temporarily disable the plugin system, edit config.php and add this line right under <?php

define('DISABLE_HOOKS', true);