diff --git a/changelog.html b/changelog.html
index 6396b3d..b008b67 100644
--- a/changelog.html
+++ b/changelog.html
@@ -6,6 +6,20 @@
 <meta http-equiv="content-type" content="text/html; charset=utf-8">
 <title>OpenAIRE API Documentation: change log</title>
 <script src="./assets/jquery.js"></script><script src="./assets/uikit.js"></script><script src="./assets/uikit-icon-max.js"></script><link rel="stylesheet" type="text/css" href="./assets/theme.css">
+<!-- Matomo -->
+<script type="text/javascript">
+   var _paq = window._paq || [];
+   /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
+   _paq.push(['trackPageView']);
+   _paq.push(['enableLinkTracking']);
+   (function() {
+   var u="//analytics.openaire.eu/";
+   _paq.push(['setTrackerUrl', u+'matomo.php']);
+   _paq.push(['setSiteId', '470']);
+   var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
+   g.type='text/javascript'; g.async=true; g.defer=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
+   })();
+   </script>
 <link rel="stylesheet" type="text/css" href="./assets/custom.css">
 <link rel="stylesheet" type="text/css" href="./assets/develop-custom.css">
 </head>
@@ -42,40 +56,40 @@
                               <li><a href="https://monitor.openaire.eu" target="_blank" class="uk-heading-bullet monitor-heading-bullet">MONITOR</a></li>
                            </ul>
                         </li>
-                         <li class="uk-nav-header uk-parent  uk-active">
+                         <li class="uk-nav-header uk-parent">
                             <a href="./overview.html"> Overview </a>
 
                          </li>
-                         <li class="uk-nav-header uk-parent">
-                            Authentication
-                            <ul class="uk-nav-sub">
-                               <li><a routerLinkActive="uk-link" href="./authentication.html" >General Information</a></li>
-                               <li><a routerLinkActive="uk-link" href="./personalToken.html" >Personal Token</a></li>
-                               <li><a routerLinkActive="uk-link" href="./registeredService.html">Registered Services</a>
-                                  <ul class="uk-nav-sub">
-                                     <li><a routerLinkActive="uk-link" href="./basic.html">Basic</a></li>
-                                     <li><a routerLinkActive="uk-link" href="./advanced.html">Advanced</a></li>
-                                  </ul>
-                               </li>
-                            </ul>                                 
-                         </li>
-                         <li class="uk-nav-header uk-parent">
+                         <li class="uk-nav-header uk-parent  uk-active">
+                             Authentication
+                             <ul class="uk-nav-sub">
+                                <li><a routerLinkActive="uk-link" href="./authentication.html" >General Information</a></li>
+                                <li><a routerLinkActive="uk-link" href="./personalToken.html" >Personal Token</a></li>
+                                <li><a routerLinkActive="uk-link" href="./registeredService.html">Registered Services</a>
+                                   <ul class="uk-nav-sub">
+                                      <li><a routerLinkActive="uk-link" href="./basic.html">Basic</a></li>
+                                      <li><a routerLinkActive="uk-link" href="./advanced.html">Advanced</a></li>
+                                   </ul>
+                                </li>
+                             </ul>                                 
+                          </li>
+                          <li class="uk-nav-header uk-parent">
                            Bulk access
                            <ul class="uk-nav-sub">
-                              <li><a routerLinkActive="uk-link" href="./graph-dumps.html" >OpenAIRE Research Graph Dumps</a></li>
+                               <li><a routerLinkActive="uk-link" href="./graph-dumps.html" >OpenAIRE Research Graph Dumps</a></li>
                               <li><a routerLinkActive="uk-link" href="./oai-pmh.html" >OAI-PMH (discontinued)</a></li>
                               <li><a routerLinkActive="uk-link" href="./bulk-projects.html" >Bulk access to projects</a></li>
                            </ul>
                          </li>
-                         <li class="uk-nav-header uk-parent">
+                          <li class="uk-nav-header uk-parent">
                            <a href="./api.html">Selective access</a>
-                           <ul class="uk-nav-sub">
+                            <ul class="uk-nav-sub">
                              <li><a href="./api.html#pubs" >Publications</a></li>
                              <li><a href="./api.html#datasets" >Research Data</a></li>
-                             <li><a href="./api.html#software" >Software</a></li>
-                             <li><a href="./api.html#other" >Other Research Products</a></li>
+                              <li><a href="./api.html#software" >Software</a></li>
+                              <li><a href="./api.html#other" >Other Research Products</a></li>
                              <li><a href="./api.html#projects" >Projects</a></li>
-                          </ul>
+                           </ul>
                          </li>
                       </ul>
                    </div>
@@ -117,24 +131,24 @@
                    </div>
                    <div class="uk-navbar-right">
                       <ul class="uk-navbar-nav">
-                         <li class="uk-parent  uk-active">
+                         <li class="uk-parent">
                             <a href="overview.html" class="" aria-expanded="false">Overview</a>
                          </li>
 
-                         <li class="uk-parent">
-                            <a href="#" class="" aria-expanded="false">Authentication</a>
-                            <div class="uk-navbar-dropdown uk-navbar-dropdown-bottom-left" style="left: 116px; top: 80px;">
-                               <div class="uk-navbar-dropdown-grid uk-child-width-1-1 uk-grid uk-grid-stack" uk-grid="">
-                                  <div class="uk-first-column">
-                                     <ul class="uk-nav uk-navbar-dropdown-nav">
-                                        <li><a routerLinkActive="uk-link" href="./authentication.html" >General Information</a></li>
-                                        <li><a routerLinkActive="uk-link" href="./personalToken.html" >Personal Token</a></li>
-                                        <li><a routerLinkActive="uk-link" href="./registeredService.html">Registered Services</a></li>                                                                                      
-                                     </ul>                                 
-                                  </div>
-                               </div>
-                            </div>
-                         </li>
+                          <li class="uk-parent uk-active">
+                             <a href="#" class="" aria-expanded="false">Authentication</a>
+                             <div class="uk-navbar-dropdown uk-navbar-dropdown-bottom-left" style="left: 116px; top: 80px;">
+                                <div class="uk-navbar-dropdown-grid uk-child-width-1-1 uk-grid uk-grid-stack" uk-grid="">
+                                   <div class="uk-first-column">
+                                      <ul class="uk-nav uk-navbar-dropdown-nav">
+                                         <li><a routerLinkActive="uk-link" href="./authentication.html" >General Information</a></li>
+                                         <li><a routerLinkActive="uk-link" href="./personalToken.html" >Personal Token</a></li>
+                                         <li><a routerLinkActive="uk-link" href="./registeredService.html">Registered Services</a></li>                                                                                      
+                                      </ul>                                 
+                                   </div>
+                                </div>
+                             </div>
+                          </li>
                          <li class="uk-parent">
                             <a href="#" class="" aria-expanded="false">Bulk access</a>
                             <div class="uk-navbar-dropdown uk-navbar-dropdown-bottom-left" style="left: 116px; top: 80px;">
@@ -142,8 +156,8 @@
                                   <div class="uk-first-column">
                                      <ul class="uk-nav uk-navbar-dropdown-nav">
                                         <li><a routerLinkActive="uk-link" href="./graph-dumps.html" >OpenAIRE Research Graph Dumps</a></li>
-                                        <li><a routerLinkActive="uk-link" href="./oai-pmh.html" >OAI-PMH (discontinued)</a></li>
-                                        <li><a routerLinkActive="uk-link" href="./bulk-projects.html" >Bulk access to projects</a></li>
+                                       <li><a routerLinkActive="uk-link" href="./oai-pmh.html" >OAI-PMH (discontinued)</a></li>
+                                       <li><a routerLinkActive="uk-link" href="./bulk-projects.html" >Bulk access to projects</a></li>
                                      </ul>
                                   </div>
                                </div>
@@ -157,8 +171,8 @@
                                      <ul class="uk-nav uk-navbar-dropdown-nav">
                                        <li><a href="./api.html#pubs" >Publications</a></li>
                                        <li><a href="./api.html#datasets" >Research Data</a></li>
-                                       <li><a href="./api.html#software" >Software</a></li>
-                                       <li><a href="./api.html#other" >Other Research Products</a></li>
+                                        <li><a href="./api.html#software" >Software</a></li>
+                                        <li><a href="./api.html#other" >Other Research Products</a></li>
                                        <li><a href="./api.html#projects" >Projects</a></li>
                                      </ul>
                                   </div>
@@ -174,7 +188,6 @@
           </div>
        </div>
      </div>
-
 <div class="first_page_section uk-section-default uk-section uk-padding-remove-vertical"><div class="first_page_banner_headline uk-grid-collapse uk-flex-middle uk-margin-remove-vertical uk-grid" uk-grid=""></div></div>
 <div class=" uk-section  uk-margin-large-top tm-middle custom-main-content" id="tm-main"><div class="uk-container"><div uk-grid="" class="uk-grid uk-grid-stack"><div class="tm-main uk-width-1-1@s uk-width-1-1@m  uk-width-1-1@l uk-row-first uk-first-column">
 <span class="uk-text-lead">Changes in API documentation:</span><table class="uk-table uk-table-striped uk-table-hover uk-table-small">
@@ -183,10 +196,6 @@
 <td>Authenticated requests to our APIs are now enabled.</td>
 </tr>
 <tr>
-<td>2021-03-02T12:32:18.238462Z</td>
-<td>Changing the header description after Michal's input</td>
-</tr>
-<tr>
 <td>2021-02-26T16:28:15.364435Z</td>
 <td>NEWS: new dump available with research products with project funding information</td>
 </tr>