on the registration page, change line 56:
$WAFV_Errors .= WAValidateLE((isset($_POST["Registration_group_Confirm"])?$_POST["Registration_group_Confirm"]:"") . "",(isset($_POST["Registration_group_Confirm"])?$_POST["Registration_group_Confirm"]:"") . "",true,5);
to:
$WAFV_Errors .= WAValidateLE((isset($_POST["Registration_group_Password"])?$_POST["Registration_group_Password"]:"") . "",(isset($_POST["Registration_group_Confirm"])?$_POST["Registration_group_Confirm"]:"") . "",true,5);
on the user update page, change line 17:
$WAFV_Errors .= WAValidateLE((isset($_POST["User_Update_group_Confirm"])?$_POST["User_Update_group_Confirm"]:"") . "",(isset($_POST["User_Update_group_Confirm"])?$_POST["User_Update_group_Confirm"]:"") . "",false,4);
to:
$WAFV_Errors .= WAValidateLE((isset($_POST["User_Update_group_Password"])?$_POST["User_Update_group_Password"]:"") . "",(isset($_POST["User_Update_group_Confirm"])?$_POST["User_Update_group_Confirm"]:"") . "",false,4);