Adjust the css selector name

app/assets/javascripts/tooltips.js

@@ -1,5 +1,5 @@
 jQuery(function($) {
-  var tooltipElements = $('.advanced--tooltip');
+  var tooltipElements = $('.advanced-tooltip');
   var input = $('input[id^="new_password"]');
   if(tooltipElements.length){
     tooltipElements.each(function createTooltip() {

app/assets/stylesheets/content/_tooltips.md

@@ -116,7 +116,7 @@ Note that the tabindex has to be set manually on the `<span>` and not the contai
     <span class="form--text-field-container">
       <input class="form--text-field -password" id="new_password" name="new_password" size="25" type="password">
     </span>
-    <span class="op_tooltip">
+    <span class="advanced-tooltip">
       <em>Must be at least 10 characters long.</em><br>
       <em>
         Must contain characters of the following classes (at least 2 of 4):

app/assets/stylesheets/content/_tooltips.sass

@@ -185,7 +185,7 @@ table
       color: #505050
 
 // tooltips with html support
-.advanced--tooltip
+.advanced-tooltip
   visibility: hidden
   opacity: 0
   transition: visibility 0s linear 0.2s, opacity 0.2s linear
@@ -224,7 +224,7 @@ table
     border-width: 11px
 
 .tooltip-visible
-  .advanced--tooltip
+  .advanced-tooltip
     visibility: visible
     opacity: 1
     transition-delay: 0.10s

app/views/my/password.html.erb

@@ -48,7 +48,7 @@ See doc/COPYRIGHT.rdoc for more details.
       <%= styled_label_tag 'password', User.human_attribute_name(:password) %>
       <div class="form--field-container">
         <%= styled_password_field_tag 'password', nil, :size => 25 %>
-        <span class="advanced--tooltip"></span>
+        <span class="advanced-tooltip"></span>
       </div>
     </div>
 
@@ -56,7 +56,7 @@ See doc/COPYRIGHT.rdoc for more details.
       <%= styled_label_tag 'new_password', User.human_attribute_name(:new_password) %>
       <div class="form--field-container">
         <%= styled_password_field_tag 'new_password', nil, :size => 25 %>
-        <span class="advanced--tooltip">
+        <span class="advanced-tooltip">
           <%= render_password_complexity_tooltip %>
         </span>
       </div>
@@ -67,7 +67,7 @@ See doc/COPYRIGHT.rdoc for more details.
             User.human_attribute_name(:password_confirmation) %>
       <div class="form--field-container">
         <%= styled_password_field_tag 'new_password_confirmation', nil, :size => 25 %>
-        <span class="advanced--tooltip">
+        <span class="advanced-tooltip">
           <%= I18n.t(:match,
                scope: [:activerecord, :errors, :models, :user, :attributes, :password])%>
         </span>