diff --git a/app/models/user.rb b/app/models/user.rb
index 2682230..6ca9f77 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -3,7 +3,6 @@ class User < ApplicationRecord
   # :confirmable, :lockable, :timeoutable, :trackable and :omniauthable
   devise :ldap_authenticatable,
          :confirmable,
-         :registerable,
          :recoverable,
          :validatable
 
diff --git a/app/views/devise/confirmations/new.html.erb b/app/views/devise/confirmations/new.html.erb
index b12dd0c..5a46eee 100644
--- a/app/views/devise/confirmations/new.html.erb
+++ b/app/views/devise/confirmations/new.html.erb
@@ -4,12 +4,16 @@
   <%= render "devise/shared/error_messages", resource: resource %>
 
   <div class="field">
-    <%= f.label :email %><br />
-    <%= f.email_field :email, autofocus: true, autocomplete: "email", value: (resource.pending_reconfirmation? ? resource.unconfirmed_email : resource.email) %>
+    <p>
+      <%= f.label :email, 'Email address' %><br />
+      <%= f.email_field :email, required: true, autofocus: true, autocomplete: "email", value: (resource.pending_reconfirmation? ? resource.unconfirmed_email : resource.email) %>
+    </p>
   </div>
 
   <div class="actions">
-    <%= f.submit "Resend confirmation instructions" %>
+    <p>
+      <%= f.submit "Resend confirmation instructions" %>
+    </p>
   </div>
 <% end %>
 
diff --git a/app/views/devise/registrations/new.html.erb b/app/views/devise/registrations/new.html.erb
deleted file mode 100644
index d655b66..0000000
--- a/app/views/devise/registrations/new.html.erb
+++ /dev/null
@@ -1,29 +0,0 @@
-<h2>Sign up</h2>
-
-<%= form_for(resource, as: resource_name, url: registration_path(resource_name)) do |f| %>
-  <%= render "devise/shared/error_messages", resource: resource %>
-
-  <div class="field">
-    <%= f.label :email %><br />
-    <%= f.email_field :email, autofocus: true, autocomplete: "email" %>
-  </div>
-
-  <div class="field">
-    <%= f.label :password %>
-    <% if @minimum_password_length %>
-    <em>(<%= @minimum_password_length %> characters minimum)</em>
-    <% end %><br />
-    <%= f.password_field :password, autocomplete: "new-password" %>
-  </div>
-
-  <div class="field">
-    <%= f.label :password_confirmation %><br />
-    <%= f.password_field :password_confirmation, autocomplete: "new-password" %>
-  </div>
-
-  <div class="actions">
-    <%= f.submit "Sign up" %>
-  </div>
-<% end %>
-
-<%= render "devise/shared/links" %>
diff --git a/app/views/devise/sessions/new.html.erb b/app/views/devise/sessions/new.html.erb
index d3a87b0..5466dad 100644
--- a/app/views/devise/sessions/new.html.erb
+++ b/app/views/devise/sessions/new.html.erb
@@ -4,17 +4,21 @@
   <%= render "devise/shared/error_messages", resource: resource %>
 
   <div class="field">
-    <%= f.label :cn, 'User' %><br />
-    <%= f.text_field :cn, autofocus: true, autocomplete: "username" %> @ kosmos.org
+    <p>
+      <%= f.label :cn, 'User' %><br />
+      <%= f.text_field :cn, autofocus: true, autocomplete: "username" %> @ kosmos.org
+    </p>
   </div>
-
   <div class="field">
-    <%= f.label :password %><br />
-    <%= f.password_field :password, autocomplete: "current-password" %>
+    <p>
+      <%= f.label :password %><br />
+      <%= f.password_field :password, autocomplete: "current-password" %>
+    </p>
   </div>
-
   <div class="actions">
-    <%= f.submit "Log in" %>
+    <p>
+      <%= f.submit "Log in" %>
+    </p>
   </div>
 <% end %>
 
diff --git a/app/views/devise/shared/_error_messages.html.erb b/app/views/devise/shared/_error_messages.html.erb
index ba7ab88..6b68ee6 100644
--- a/app/views/devise/shared/_error_messages.html.erb
+++ b/app/views/devise/shared/_error_messages.html.erb
@@ -1,11 +1,5 @@
 <% if resource.errors.any? %>
   <div id="error_explanation">
-    <h2>
-      <%= I18n.t("errors.messages.not_saved",
-                 count: resource.errors.count,
-                 resource: resource.class.model_name.human.downcase)
-       %>
-    </h2>
     <ul>
       <% resource.errors.full_messages.each do |message| %>
         <li><%= message %></li>
diff --git a/app/views/devise/shared/_links.html.erb b/app/views/devise/shared/_links.html.erb
index 084af70..fef9bef 100644
--- a/app/views/devise/shared/_links.html.erb
+++ b/app/views/devise/shared/_links.html.erb
@@ -1,25 +1,25 @@
-<%- if controller_name != 'sessions' %>
-  <%= link_to "Log in", new_session_path(resource_name) %><br />
-<% end %>
-
-<%- if devise_mapping.registerable? && controller_name != 'registrations' %>
-  <%= link_to "Sign up", new_registration_path(resource_name) %><br />
-<% end %>
-
-<%- if devise_mapping.recoverable? && controller_name != 'passwords' && controller_name != 'registrations' %>
-  <%= link_to "Forgot your password?", new_password_path(resource_name) %><br />
-<% end %>
-
-<%- if devise_mapping.confirmable? && controller_name != 'confirmations' %>
-  <%= link_to "Didn't receive confirmation instructions?", new_confirmation_path(resource_name) %><br />
-<% end %>
-
-<%- if devise_mapping.lockable? && resource_class.unlock_strategy_enabled?(:email) && controller_name != 'unlocks' %>
-  <%= link_to "Didn't receive unlock instructions?", new_unlock_path(resource_name) %><br />
-<% end %>
-
-<%- if devise_mapping.omniauthable? %>
-  <%- resource_class.omniauth_providers.each do |provider| %>
-    <%= link_to "Sign in with #{OmniAuth::Utils.camelize(provider)}", omniauth_authorize_path(resource_name, provider) %><br />
+<div class="devise-links">
+  <%- if controller_name != 'sessions' %>
+    <p>
+      <%= link_to "Log in", new_session_path(resource_name) %><br />
+    </p>
   <% end %>
-<% end %>
+
+  <%- if devise_mapping.recoverable? && controller_name != 'passwords' && controller_name != 'registrations' %>
+    <p>
+      <%= link_to "Forgot your password?", new_password_path(resource_name) %><br />
+    </p>
+  <% end %>
+
+  <%- if devise_mapping.confirmable? && controller_name != 'confirmations' %>
+    <p>
+      <%= link_to "Didn't receive confirmation instructions?", new_confirmation_path(resource_name) %><br />
+    </p>
+  <% end %>
+
+  <%- if devise_mapping.lockable? && resource_class.unlock_strategy_enabled?(:email) && controller_name != 'unlocks' %>
+    <p>
+      <%= link_to "Didn't receive unlock instructions?", new_unlock_path(resource_name) %><br />
+    </p>
+  <% end %>
+</div>
diff --git a/config/initializers/devise.rb b/config/initializers/devise.rb
index b179e2b..760bcdf 100644
--- a/config/initializers/devise.rb
+++ b/config/initializers/devise.rb
@@ -203,7 +203,7 @@ Devise.setup do |config|
 
   # ==> Configuration for :validatable
   # Range for password length.
-  config.password_length = 6..128
+  config.password_length = 12..128
 
   # Email regex used to validate email formats. It simply asserts that
   # one (and only one) @ exists in the given string. This is mainly
diff --git a/config/locales/devise.en.yml b/config/locales/devise.en.yml
index 80a7e4b..44806c8 100644
--- a/config/locales/devise.en.yml
+++ b/config/locales/devise.en.yml
@@ -9,7 +9,7 @@ en:
     failure:
       already_authenticated: "You are already signed in."
       inactive: "Your account is not activated yet."
-      invalid: "Invalid %{authentication_keys} or password."
+      invalid: "Invalid username or password."
       locked: "Your account is locked."
       last_attempt: "You have one more attempt before your account is locked."
       not_found_in_database: "Invalid %{authentication_keys} or password."