anchor.diff:          </div>
   
           <div class="probe-links">
  -          <%= form_tag selection_probes_path, html: { id: "#{dom_id(probe_option)}_form" }  do %>
  -            <input type="hidden" name="id" value="<%= @probe.codename %>">
  -            <input type="hidden" name="option_id" value="<%= probe_option.id %>">
  -            <input type="submit" value="Votar" class="button small expanded margin-top">
  +          <% if user_signed_in? && current_user.level_two_or_three_verified? %>
  +            <%= form_tag selection_probes_path, id: "#{dom_id(probe_option)}_form" do %>
  +              <input type="hidden" name="id" value="<%= @probe.codename %>">
  +              <input type="hidden" name="option_id" value="<%= probe_option.id %>">
  +              <input type="submit" value="Votar" class="button small expanded margin-top">
  +            <% end %>
             <% end %>
  -
             <%= link_to probe_option.file_path('memoria', 'pdf'),
                         title: "PDF #{probe_option.name} | #{probe_option.file_size('memoria', 'pdf')}",
                         target: "_blank" do %>
  
positive.code:           </div>
          </div>
        <% end %>
      <%# end %>
    </div>
  </div>
  
  
negative.code: 
  <div class="row">
    <div class="small-12 column">
  
        <% if user_signed_in? %>
          <% if !current_user.level_two_or_three_verified? %>
            <div class="row">
              <div class="small-12 column">
                <div class="callout warning">
  