I want to add AddThis, social bookmarking service, to my site. I followed the instruction on the site. There is an option where you can select your own services and customize the order.

I selected facebook, twitter, google, linked in, pinterest and whatsapp.
As instructed, I added
<script type="text/javascript" src="https://s7.addthis.com/js/300/addthis_widget.js#pubid=ra-53353be15c66b7b4" async="async"></script>
inside the head tag just before closing.
Then, where I need the buttons to show, I added
<div class="addthis_toolbox addthis_default_style addthis_32x32_style">
<a class="addthis_button_preferred_1"></a>
<a class="addthis_button_preferred_2"></a>
<a class="addthis_button_preferred_3"></a>
<a class="addthis_button_preferred_4"></a>
<a class="addthis_button_preferred_5"></a>
<a class="addthis_button_preferred_6"></a>
</div>
The end result:

It shows a few buttons that I haven't selected.
I must be doing something wrong and spent the whole day looking into it. Can you help.