That's okay:
<?php if(isset($_GET['failed']) && $_GET['failed'] == "1") { ?>
Your Login Was Unsuccessful - Please Try Again
<?php } ?>
This nest is better:
<? if(isset($_POST["LogIN"])){?>
<?php if(!WA_Auth_RulePasses("Super Administrator")){ // Begin Show Region ?>
<?php if(!WA_Auth_RulePasses("Administrator")){ // Begin Show Region ?>
<span style=" font-size:12px; color:#C00; margin-left:110px">*Email or Password is incorrect.</span>
<?php } // End Show Region ?>
<?php } // End Show Region ?>
<?php }; ?>
It's self-contained and you can plug it anywhere. Basically, nest your rules (Super Admin & Admin) and finally add a condition to listen for the trigger.