diff --git a/gridsome.server.js b/gridsome.server.js
index cefda8b8c1..5aa554e6e3 100644
--- a/gridsome.server.js
+++ b/gridsome.server.js
@@ -330,6 +330,7 @@ stream.write(`\n- link: ${options.path}
     createNewRedirect(`/online-courses/introduction-course`, '/learn/introduction-course/overview')
     createNewRedirect(`/online-courses/smart-home-course`, '/learn/smart-home-course/overview')
     createNewRedirect(`/online-courses/sensors-connectivity-course`, '/learn/sensors-connectivity-course/overview')
+    createNewRedirect('/certificates', '/learn/')
 
     oldCourses.forEach(path => {
       createNewRedirect(`/online-courses/${path.old}`, `/learn/${path.new}/overview`,)
@@ -342,6 +343,8 @@ stream.write(`\n- link: ${options.path}
     allCoursesPaths.forEach(path => {
       createNewRedirect(`/learn/${path}`, `/learn/${path}/overview`)
     })
+
+    
  
 
     allPossiblePaths.forEach(node => {
diff --git a/src/components/Header.vue b/src/components/Header.vue
index de7bd7fe1f..05ec2997ba 100644
--- a/src/components/Header.vue
+++ b/src/components/Header.vue
@@ -11,7 +11,7 @@
         <nav id="nav" class="nav header__section">
             <g-link class="nav__link" :class="{'active': $route.path.includes('learn')}" to="/learn/">{{$ts('Learn')}}</g-link>
             <!-- <g-link class="nav__link" :class="{'active': $route.path.includes('playground')}" to="/playground/">{{$ts('Playground')}}</g-link> -->
-            <g-link class="nav__link" :class="{'active': $route.path.includes('certificates')}" to="/certificates/">{{$ts('Blockchain certificate')}}</g-link>
+            <!-- <g-link class="nav__link" :class="{'active': $route.path.includes('certificates')}" to="/certificates/">{{$ts('Blockchain certificate')}}</g-link> -->
              <g-link class="nav__link"  to="https://robonomics.network/">{{$ts('Robonomics website')}}</g-link>
         </nav>
 
diff --git a/src/data/courses-hashes.yaml b/src/data/courses-hashes.yaml
index d6cecdecf9..20e6f9c289 100644
--- a/src/data/courses-hashes.yaml
+++ b/src/data/courses-hashes.yaml
@@ -458,7 +458,7 @@
 - link: /en/learn/feecc-course/feecc-analytics-deployment/ 
   hash: 2128efab9e725f888aa7cb640974e9c7 
   lastUpdate: Thu Nov 16 2023 16:40:16 GMT+0400 (Samara Standard Time) 
-  updated/en/learn/feecc-course/feecc-analytics-deployment/: true  
+  updated/en/learn/feecc-course/feecc-analytics-deployment/: false   
 
 - link: /en/learn/feecc-course/feecc-architecture/ 
   hash: 665b84f8e2a95607464e94007936009c 
@@ -468,12 +468,12 @@
 - link: /en/learn/feecc-course/feecc-workbench-deployment/ 
   hash: 586dd73d71f6f2ba90b96988312e3695 
   lastUpdate: Thu Nov 16 2023 16:40:16 GMT+0400 (Samara Standard Time) 
-  updated/en/learn/feecc-course/feecc-workbench-deployment/: true  
+  updated/en/learn/feecc-course/feecc-workbench-deployment/: false   
 
 - link: /en/learn/feecc-course/feecc-workbench-demo/ 
   hash: b4fcafcffca7660cc5993ca515a42549 
   lastUpdate: Thu Nov 16 2023 16:40:16 GMT+0400 (Samara Standard Time) 
-  updated/en/learn/feecc-course/feecc-workbench-demo/: true  
+  updated/en/learn/feecc-course/feecc-workbench-demo/: false   
 
 - link: /en/learn/feecc-course/overview/ 
   hash: 3ec016f3b4e2cf925d59634452bfdd70