I do believe that OTP/MFA is now working.

app/views/devise/passwords/edit.html.erb

@@ -21,5 +21,5 @@
     <%= f.submit "Change my password" %>
   </div>
 <% end %>
-
-<%= render "devise/shared/links" %>
+<hr/>
+<%#= render "devise/shared/links" %>

app/views/devise/registrations/edit.html.erb

@@ -35,5 +35,12 @@
     <%= f.submit "Update" %>
   </div>
 <% end %>
+<hr/>
 
+<% if current_user.otp_secret.to_s.size == 0 %>
+  <%= link_to "Enable MFA", new_mfa_path %>
+<% else %>
+  <%= link_to "Edit MFA", new_mfa_path %>
+<% end %>
+|
 <%= link_to "Back", :back %>

app/views/devise/sessions/new.html.erb

@@ -12,6 +12,11 @@
     <%= f.password_field :password, autocomplete: "current-password", class: "input" %>
   </div>
 
+    <div class="flex flex-column mt-3">
+    <%= f.label :otp_attempt, class: "my-2" %>
+    <%= f.password_field :otp_attempt, autocomplete: "OTP Code", class: "input" %>
+  </div>
+
   <% if devise_mapping.rememberable? %>
     <div class="flex flex-items-center mt-4">
       <%= f.check_box :remember_me, class: "checkbox mr-3" %>