diff --git a/lib/xikolo/client.rb b/lib/xikolo/client.rb
index 06e4ecf4..4e6f22b2 100644
--- a/lib/xikolo/client.rb
+++ b/lib/xikolo/client.rb
@@ -10,7 +10,7 @@ class Xikolo::Client
   end
 
   def self.user_profile_url(user_id)
-    return url + 'users/' + user_id
+    return url + 'v2/users/' + user_id
   end
 
   def self.post_request(url, params)
@@ -38,11 +38,11 @@ class Xikolo::Client
   end
 
   def self.accept
-    'application/vnd.xikolo.v1, application/json'
+    'application/vnd.xikolo.v1, application/vnd.api+json, application/json'
   end
 
   def self.token
-    'Token token="'+Rails.application.secrets.openhpi_api_token+'"'
+    'Token token='+Rails.application.secrets.openhpi_api_token#+'"'
   end
 
   private
diff --git a/lib/xikolo/user_client.rb b/lib/xikolo/user_client.rb
index 63412e46..c681c999 100644
--- a/lib/xikolo/user_client.rb
+++ b/lib/xikolo/user_client.rb
@@ -4,12 +4,10 @@ class Xikolo::UserClient
 
     # return default values if user is not found or if there is a server issue:
     if user
-      if user['display_name'].present?
-        name = user['display_name']
-      else
-        name = user['first_name']
-      end
-      return {display_name: name, user_visual: user['user_visual'], language: user['language']}
+      name = user.dig('data', 'attributes', 'name') || "User "  + user_id
+      user_visual = user.dig('data', 'attributes', 'avatar_url') || ActionController::Base.helpers.image_path('default.png')
+      language = user.dig('data', 'attributes', 'language') || "DE"
+      return {display_name: name, user_visual: user_visual, language: language}
     else
       return {display_name: "User " + user_id, user_visual: ActionController::Base.helpers.image_path('default.png'), language: "DE"}
     end