diff --git a/README.md b/README.md
index 274c884..ace59ac 100644
--- a/README.md
+++ b/README.md
@@ -81,6 +81,7 @@ enable the `Outage manager` plugin and place it on the top.
 after your `$CFG->dataroot` is set:
 
 ```
+// Insert this after $CFG->dataroot is defined.
 if (file_exists(__DIR__.'/auth/outage/bootstrap.php')) {
     require(__DIR__.'/auth/outage/bootstrap.php');
 }
diff --git a/bootstrap.php b/bootstrap.php
index 566d843..fd319dc 100644
--- a/bootstrap.php
+++ b/bootstrap.php
@@ -54,4 +54,4 @@ if (file_exists($CFG->dataroot.'/climaintenance.php')) {
 }
 
 // 3) Set flag this file was loaded.
-$CFG->auth_outage_check = 1;
+$CFG->auth_outage_bootstrap_loaded = true;
diff --git a/classes/local/cli/cli_exception.php b/classes/local/cli/cli_exception.php
index 2b7a447..bb13d9f 100644
--- a/classes/local/cli/cli_exception.php
+++ b/classes/local/cli/cli_exception.php
@@ -74,9 +74,9 @@ class cli_exception extends Exception {
     const ERROR_OUTAGE_CHANGED = 7;
 
     /**
-     * The outage plugin is not enabled.
+     * The outage plugin is not properly configured.
      */
-    const ERROR_PLUGIN_DISABLED = 8;
+    const ERROR_PLUGIN_CONFIGURATION = 8;
 
     /**
      * Moodle maintenance mode is enabled.
diff --git a/classes/local/cli/clibase.php b/classes/local/cli/clibase.php
index cc4b853..dc96578 100644
--- a/classes/local/cli/clibase.php
+++ b/classes/local/cli/clibase.php
@@ -25,6 +25,7 @@
 
 namespace auth_outage\local\cli;
 
+use auth_outage\local\outagelib;
 use coding_exception;
 use core\session\manager;
 
@@ -58,8 +59,9 @@ abstract class clibase {
         global $CFG;
         require_once($CFG->libdir.'/clilib.php');
 
-        if (!is_enabled_auth('outage')) {
-            throw new cli_exception(get_string('cliplugindisabled', 'auth_outage'), cli_exception::ERROR_PLUGIN_DISABLED);
+        $warning = outagelib::generate_plugin_configuration_warning();
+        if ($warning) {
+            throw new cli_exception($warning, cli_exception::ERROR_PLUGIN_CONFIGURATION);
         }
 
         $this->become_admin_user();
diff --git a/classes/local/outagelib.php b/classes/local/outagelib.php
index 8ddfd17..65b70c3 100644
--- a/classes/local/outagelib.php
+++ b/classes/local/outagelib.php
@@ -104,7 +104,7 @@ class outagelib {
 
             // There is a previewing or active outage.
             $CFG->additionalhtmltopofbody = renderer::get()->render_warningbar($active, $time, false, $preview).
-                $CFG->additionalhtmltopofbody;
+                                            $CFG->additionalhtmltopofbody;
         } catch (Exception $e) {
             debugging('Exception occured while injecting our code: '.$e->getMessage());
             debugging($e->getTraceAsString(), DEBUG_DEVELOPER);
@@ -144,7 +144,7 @@ class outagelib {
             'default_warning_duration' => (string)(60 * 60),
             'default_title'            => get_string('defaulttitlevalue', 'auth_outage'),
             'default_description'      => get_string('defaultdescriptionvalue', 'auth_outage'),
-            'remove_selectors'         => '.usermenu',
+            'remove_selectors'         => ".usermenu\n.logininfo\n.homelink",
         ];
     }
 
@@ -290,4 +290,38 @@ EOT;
             file_put_contents($file, $code);
         }
     }
+
+    /**
+     * Generates a warning message in case the plugin is not active and configured.
+     *
+     * @return string
+     *
+     * @internal stdClass $CFG
+     * @internal bootstrap_renderer $OUTPUT
+     */
+    public static function generate_plugin_configuration_warning() {
+        global $CFG, $OUTPUT;
+
+        $message = [];
+
+        if (!isset($CFG->auth_outage_bootstrap_loaded) || !$CFG->auth_outage_bootstrap_loaded) {
+            $message[] = get_string('configurationwarning', 'auth_outage');
+        }
+
+        if (!is_enabled_auth('outage')) {
+            $message[] = get_string('configurationdisabled', 'auth_outage');
+        }
+
+        if (count($message) == 0) {
+            return '';
+        }
+
+        if (CLI_SCRIPT) {
+            $message = html_to_text(implode("; ", $message));
+        } else {
+            $message = $OUTPUT->notification(implode("<br />", $message), 'notifyfailure');
+        }
+
+        return $message;
+    }
 }
diff --git a/lang/en/auth_outage.php b/lang/en/auth_outage.php
index d866276..bf6f256 100644
--- a/lang/en/auth_outage.php
+++ b/lang/en/auth_outage.php
@@ -43,7 +43,6 @@ $string['clifinishparamhelp'] = 'shows parameters help.';
 $string['clifinishparamactive'] = 'finishes the currently active outage.';
 $string['clifinishparamoutageid'] = 'the id of the outage to finish.';
 $string['cliinmaintenancemode'] = 'Moodle maintenance mode is on. Use "php admin/cli/maintenance.php --disable" to disable it before finishing the outage.';
-$string['cliplugindisabled'] = 'The authentication plugin \'Outage\' is disabled. Please enable it in the site administration it and try again.';
 $string['cliwaitforiterroridxoractive'] = 'You must use --outageid=# or --active parameter but not both.';
 $string['cliwaitforithelp'] = 'Waits until an outage starts.';
 $string['cliwaitforitoutagestarted'] = 'Outage started!';
@@ -60,6 +59,8 @@ $string['clierroroutageended'] = 'Outage has already ended.';
 $string['clierroroutagenotfound'] = 'Outage not found.';
 $string['clioutagecreated'] = 'Outage created, id: {$a->id}';
 $string['clone'] = 'Clone';
+$string['configurationwarning'] = 'The outage plugin is not properly configured, please refer to <a href="https://github.com/catalyst/moodle-auth_outage/blob/master/README.md#installation" target="_blank">README.md</a> for more information.';
+$string['configurationdisabled'] = 'The authentication plugin \'Outage\' is disabled. Please enable it in the site administration it and try again.';
 $string['datetimeformat'] = '%a %d %h %Y at %I:%M%P %Z';
 $string['defaultlayoutcss'] = 'Layout CSS';
 $string['defaultlayoutcssdescription'] = 'This CSS code can be used to override the Outage Warning Bar CSS.';
diff --git a/manage.php b/manage.php
index 510661c..967d083 100644
--- a/manage.php
+++ b/manage.php
@@ -25,6 +25,7 @@
 
 use auth_outage\dml\outagedb;
 use auth_outage\output\renderer;
+use auth_outage\local\outagelib;
 
 require_once(__DIR__.'/../../config.php');
 require_once($CFG->libdir.'/adminlib.php');
@@ -39,7 +40,8 @@ $now = time();
 
 renderer::get()->output_view('manage.php', [
     'unended' => outagedb::get_all_unended($now),
-    'ended' => outagedb::get_all_ended($now),
+    'ended'   => outagedb::get_all_ended($now),
+    'warning' => outagelib::generate_plugin_configuration_warning(),
 ]);
 
 echo $OUTPUT->footer();
diff --git a/settings.php b/settings.php
index 036876a..2261fbd 100644
--- a/settings.php
+++ b/settings.php
@@ -89,10 +89,7 @@ if ($hassiteconfig && is_enabled_auth('outage')) {
 
     // Create 'Allowed IPs' settings.
     $allowedips = outagelib::get_config()->allowedips;
-    $description = '';
-    if (!isset($CFG->auth_outage_check) || !$CFG->auth_outage_check) {
-        $description .= $OUTPUT->notification(get_string('allowedipsnoconfig', 'auth_outage'), 'notifyfailure');
-    }
+    $description = outagelib::generate_plugin_configuration_warning();
     if (trim($allowedips) == '') {
         $message = 'allowedipsempty';
         $type = 'notifymessage';
diff --git a/tests/phpunit/local/cli/cli_test.php b/tests/phpunit/local/cli/cli_test.php
index c83fccf..d05fa7f 100644
--- a/tests/phpunit/local/cli/cli_test.php
+++ b/tests/phpunit/local/cli/cli_test.php
@@ -103,7 +103,7 @@ class cli_test extends auth_outage_cli_testcase {
         \core\session\manager::gc(); // Remove stale sessions.
         core_plugin_manager::reset_caches();
         // Try to create an CLI object.
-        $this->set_expected_cli_exception(cli_exception::ERROR_PLUGIN_DISABLED);
+        $this->set_expected_cli_exception(cli_exception::ERROR_PLUGIN_CONFIGURATION);
         new create();
     }
 }
diff --git a/views/manage.php b/views/manage.php
index 0a54f79..22925df 100644
--- a/views/manage.php
+++ b/views/manage.php
@@ -30,6 +30,8 @@ use auth_outage\output\renderer;
 defined('MOODLE_INTERNAL') || die();
 
 $urlnew = new moodle_url('/auth/outage/edit.php');
+
+echo $viewbag['warning'];
 ?>
 
 <section id="section_planned_outages">