app/views/devise/unlocks/new.html.erb
<h2>Resend unlock instructions</h2>
<%= form_for(resource, :as => resource_name, :url => unlock_path(resource_name), :html => { :method => :post }) do |f| %>
<%= render partial: 'devise/shared/error_messages', resource: resource %>
<p><%= f.label :email %><br />
<%= f.text_field :email %></p>
<p><%= f.submit "Resend unlock instructions" %></p>
<% end %>
<%= render 'devise/shared/links' %>