Problem with integration in my page

Hi I followed your tutorial on this Link to join or you want a profile page, it is perfectly integrated but cons I have a problem with the “selected image” does not work on the profile page in admin it works but not on my page, I copy pasted this little piece of code does not work either:

<p id="<?php echo ($user=='add-new-user') ? 'wpua-add-button' : 'wpua-add-button-existing'?>"><button type="button" class="button" id="<?php echo ($user=='add-new-user') ? 'wpua-add' : 'wpua-add-existing'?>" name="<?php echo ($user=='add-new-user') ? 'wpua-add' : 'wpua-add-existing'?>" data-title="<?php _e('Choose Image'); ?>: <?php echo $user->display_name; ?>"><?php _e('Choose Image'); ?></button></p>