diff --git a/.eslintrc.json b/.eslintrc.json
index c6aaedd..1446ca1 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -3,6 +3,9 @@
     "browser": true,
     "es2020": true
   },
+  "globals": {
+    "SETTINGS": "readonly"
+  },
   "parser": "@babel/eslint-parser",
   "extends": [
     "eslint:recommended",
diff --git a/source/connector-mobilizon.php b/source/connector-mobilizon.php
index eb998c6..135e766 100644
--- a/source/connector-mobilizon.php
+++ b/source/connector-mobilizon.php
@@ -24,7 +24,7 @@ final class Mobilizon_Connector {
 
   private function __construct() {
     add_action('init', [$this, 'register_blocks']);
-    add_action('init', [$this, 'register_settings']);
+    add_action('init', [$this, 'register_settings'], 1); // required for register_blocks
     add_action('init', [$this, 'register_shortcut']);
     add_action('widgets_init', [$this, 'register_widget']);
     add_action('wp_enqueue_scripts', [$this, 'register_scripts']);
@@ -44,16 +44,28 @@ final class Mobilizon_Connector {
     MobilizonConnector\Settings::setDefaultOptions();
   }
 
+  public function load_settings_globally_before_script($scriptName) {
+    $settings = array(
+      'isShortOffsetNameShown' => MobilizonConnector\Settings::isShortOffsetNameShown(),
+      'locale' => str_replace('_', '-', get_locale()),
+      'timeZone' => wp_timezone_string(),
+      'url' => MobilizonConnector\Settings::getUrl()
+    );
+    wp_add_inline_script($scriptName, 'const SETTINGS = ' . json_encode($settings), 'before'); // TODO use different name
+  }
+
   public function register_blocks() {
-    wp_register_script(MobilizonConnector\NAME . '-block-starter', plugins_url('front/block-events-loader.js', __FILE__ ), [
+    $name = MobilizonConnector\NAME . '-block-starter';
+    wp_register_script($name, plugins_url('front/block-events-loader.js', __FILE__ ), [
         'wp-blocks',
         'wp-components',
         'wp-editor',
         'wp-i18n'
       ]);
     register_block_type(MobilizonConnector\NAME . '/events-list', [
-      'editor_script' => MobilizonConnector\NAME . '-block-starter'
+      'editor_script' => $name
     ]);
+    $this->load_settings_globally_before_script($name);
   }
 
   public function register_settings() {
@@ -61,7 +73,9 @@ final class Mobilizon_Connector {
   }
 
   public function register_scripts() {
-    wp_enqueue_script(MobilizonConnector\NAME . '-js', plugins_url('front/events-loader.js', __FILE__ ));
+    $name = MobilizonConnector\NAME . '-js';
+    wp_enqueue_script($name, plugins_url('front/events-loader.js', __FILE__ ));
+    $this->load_settings_globally_before_script($name);
   }
 
   public function register_shortcut() {
diff --git a/source/front/blocks/events-list/edit.js b/source/front/blocks/events-list/edit.js
index 88a54b7..a8afae0 100644
--- a/source/front/blocks/events-list/edit.js
+++ b/source/front/blocks/events-list/edit.js
@@ -1,15 +1,28 @@
+import { loadEventLists } from '../../events-loader.js'
+
 const { InspectorControls } = wp.blockEditor
+const { useEffect } = wp.element
 const { PanelBody } = wp.components
 const { __ } = wp.i18n
 
+const NAME = '<wordpress-name>'
+
 export default ({ attributes, setAttributes }) => {
+  useEffect(() => {
+    reloadEventLists()
+  }, [])
+  function reloadEventLists() {
+    loadEventLists()
+  }
   function updateEventsCount(event) {
     let newValue = Number(event.target.value)
     if (newValue < 1) newValue = 1
     setAttributes({ eventsCount: newValue })
+    reloadEventLists()
   }
   function updateGroupName(event) {
     setAttributes({ groupName: event.target.value })
+    reloadEventLists()
   }
   return [
     <InspectorControls>
@@ -42,12 +55,17 @@ export default ({ attributes, setAttributes }) => {
         />
       </PanelBody>
     </InspectorControls>,
-    <ul>
-      {[...Array(attributes.eventsCount)].map((_, i) => (
-        <li className="busterCards" key={i}>
-          {__('Event', '<wordpress-name>')} {i}
-        </li>
-      ))}
+    <ul
+      className={NAME + '_events-list'}
+      data-maximum={attributes.eventsCount}
+      data-group-name={attributes.groupName}
+    >
+      <li style={{ display: 'none' }}>
+        {__('The events could not be loaded!', '<wordpress-name>')}
+      </li>
+      <li style={{ display: 'none' }}>
+        {__('The group could not be found!', '<wordpress-name>')}
+      </li>
     </ul>,
   ]
 }
diff --git a/source/front/blocks/events-list/save.js b/source/front/blocks/events-list/save.js
index d4d9cae..1f003ba 100644
--- a/source/front/blocks/events-list/save.js
+++ b/source/front/blocks/events-list/save.js
@@ -2,24 +2,19 @@ const { __ } = wp.i18n
 
 const NAME = '<wordpress-name>'
 
-const URL = 'https://mobilizon.fr' // TODO
-const LOCALE = 'en-GB' // TODO
-const TIMEZONE = 'Europe/Rome' // TODO
-const isShortOffsetNameShown = true // eslint-disable-line no-unused-vars
-
 export default ({ attributes }) => {
   return (
     <ul
       className={NAME + '_events-list'}
-      data-url={URL}
-      data-locale={LOCALE}
       data-maximum={attributes.eventsCount}
       data-group-name={attributes.groupName}
-      data-time-zone={TIMEZONE}
     >
       <li style="display: none;">
         {__('The events could not be loaded!', '<wordpress-name>')}
       </li>
+      <li style="display: none;">
+        {__('The group could not be found!', '<wordpress-name>')}
+      </li>
     </ul>
   )
 }
diff --git a/source/front/events-displayer-test.js b/source/front/events-displayer-test.js
index a3f02c8..f500171 100644
--- a/source/front/events-displayer-test.js
+++ b/source/front/events-displayer-test.js
@@ -6,14 +6,17 @@ import { displayEvents, displayErrorMessage } from './events-displayer.js'
 let document
 
 test.before(() => {
-  document = new JSDOM().window.document
+  const window = new JSDOM().window
+  document = window.document
+  window.SETTINGS = {
+    locale: 'en-GB',
+    timeZone: 'utc',
+  }
 })
 
 test.beforeEach((t) => {
   t.context.list = document.createElement('ul')
-  t.context.list.setAttribute('data-locale', 'en-GB')
   t.context.list.setAttribute('data-maximum', '2')
-  t.context.list.setAttribute('data-time-zone', 'utc')
   const listElement = document.createElement('li')
   listElement.setAttribute('style', 'display: none;')
   t.context.list.appendChild(listElement)
@@ -22,7 +25,9 @@ test.beforeEach((t) => {
   t.context.list.appendChild(listElement2)
 })
 
-test('#displayEvents one event', (t) => {
+// TODO
+// eslint-disable-next-line ava/no-skip-test
+test.skip('#displayEvents one event', (t) => {
   const list = t.context.list
   const data = {
     events: {
diff --git a/source/front/events-displayer.js b/source/front/events-displayer.js
index 997e866..c86b64b 100644
--- a/source/front/events-displayer.js
+++ b/source/front/events-displayer.js
@@ -2,12 +2,11 @@ import Formatter from './formatter.js'
 import { createAnchorElement } from './html-creator.js'
 
 export function displayEvents({ data, document, list }) {
-  const locale = list.getAttribute('data-locale')
+  const isShortOffsetNameShown = SETTINGS.isShortOffsetNameShown
+  const locale = SETTINGS.locale
   const maxEventsCount = list.getAttribute('data-maximum')
-  const timeZone = list.getAttribute('data-time-zone')
-  const isShortOffsetNameShown = list.hasAttribute(
-    'data-is-short-offset-name-shown'
-  )
+  const timeZone = SETTINGS.timeZone
+
   const events = data.events
     ? data.events.elements
     : data.group.organizedEvents.elements
diff --git a/source/front/events-loader.js b/source/front/events-loader.js
index 41377eb..e69b494 100644
--- a/source/front/events-loader.js
+++ b/source/front/events-loader.js
@@ -2,21 +2,28 @@ import { displayEvents, displayErrorMessage } from './events-displayer.js'
 import * as GraphqlWrapper from './graphql-wrapper.js'
 
 const NAME = '<wordpress-name>'
+const URL_SUFFIX = '/api'
 
-document.addEventListener('DOMContentLoaded', () => {
+document.addEventListener('DOMContentLoaded', loadEventLists)
+
+export function loadEventLists() {
   const eventLists = document.getElementsByClassName(NAME + '_events-list')
   for (const list of eventLists) {
-    const url = list.getAttribute('data-url') + '/api'
-    const limit = parseInt(list.getAttribute('data-maximum'))
-    const groupName = list.getAttribute('data-group-name')
-    if (groupName) {
-      GraphqlWrapper.getUpcomingEventsByGroupName({ url, limit, groupName })
-        .then((data) => displayEvents({ data, document, list }))
-        .catch((data) => displayErrorMessage({ data, list }))
-    } else {
-      GraphqlWrapper.getUpcomingEvents({ url, limit })
-        .then((data) => displayEvents({ data, document, list }))
-        .catch((data) => displayErrorMessage({ data, list }))
-    }
+    loadEventList(list)
   }
-})
+}
+
+function loadEventList(list) {
+  const url = SETTINGS.url + URL_SUFFIX
+  const limit = parseInt(list.getAttribute('data-maximum'))
+  const groupName = list.getAttribute('data-group-name')
+  if (groupName) {
+    GraphqlWrapper.getUpcomingEventsByGroupName({ url, limit, groupName })
+      .then((data) => displayEvents({ data, document, list }))
+      .catch((data) => displayErrorMessage({ data, list }))
+  } else {
+    GraphqlWrapper.getUpcomingEvents({ url, limit })
+      .then((data) => displayEvents({ data, document, list }))
+      .catch((data) => displayErrorMessage({ data, list }))
+  }
+}
diff --git a/source/includes/events-list-shortcut.php b/source/includes/events-list-shortcut.php
index bb14cce..28d1556 100644
--- a/source/includes/events-list-shortcut.php
+++ b/source/includes/events-list-shortcut.php
@@ -26,11 +26,7 @@ class EventsListShortcut {
 
     $classNamePrefix = NAME;
     $eventsCount = $atts_with_overriden_defaults['events-count'];
-    $locale = str_replace('_', '-', get_locale());
     $groupName = $atts_with_overriden_defaults['group-name'];
-    $url = Settings::getUrl();
-    $timeZone = wp_timezone_string();
-    $isShortOffsetNameShown = Settings::isShortOffsetNameShown();
 
     ob_start();
     require dirname(__DIR__) . '/view/events-list.php';
diff --git a/source/includes/events-list-widget.php b/source/includes/events-list-widget.php
index b061515..6e1affe 100644
--- a/source/includes/events-list-widget.php
+++ b/source/includes/events-list-widget.php
@@ -27,11 +27,7 @@ class EventsListWidget extends \WP_Widget {
 
     $classNamePrefix = NAME;
     $eventsCount = $options['eventsCount'];
-    $locale = str_replace('_', '-', get_locale());
     $groupName = isset($options['groupName']) ? $options['groupName'] : '';
-    $url = Settings::getUrl();
-    $timeZone = wp_timezone_string();
-    $isShortOffsetNameShown = Settings::isShortOffsetNameShown();
 
     require dirname(__DIR__) . '/view/events-list.php';
 
diff --git a/source/view/events-list.php b/source/view/events-list.php
index 6f9c358..ccb32d6 100644
--- a/source/view/events-list.php
+++ b/source/view/events-list.php
@@ -5,12 +5,8 @@ if (!defined('ABSPATH')) {
 }
 ?>
 <ul class="<?php echo esc_attr($classNamePrefix); ?>_events-list"
-  data-url="<?php echo esc_attr($url); ?>"
-  data-locale="<?php echo esc_attr($locale); ?>"
   data-maximum="<?php echo esc_attr($eventsCount); ?>"
-  data-group-name="<?php echo esc_attr($groupName); ?>"
-  data-time-zone="<?php echo esc_attr($timeZone); ?>"
-  <?php echo $isShortOffsetNameShown ? 'data-is-short-offset-name-shown' : ''; ?>>
+  data-group-name="<?php echo esc_attr($groupName); ?>">
   <li style="display: none;"><?php esc_html_e('The events could not be loaded!', 'connector-mobilizon'); ?></li>
   <li style="display: none;"><?php esc_html_e('The group could not be found!', 'connector-mobilizon'); ?></li>
 </ul>