Problem Synchronization

Sorry for my bad english and thank you for this good plugin

I have a problem width the Synchronization.
I have the last version of wordpress (4.3) and LikeBtn (2.1.4) width ULTRA plan. Synchronization is activate.

Everything is OK except one thing : When I edit the number of vote on the administration (Statistics). For example, i uptade the number from 5 to 220.
I’ts display in my page : 220. So it’s OK.
But after the synchronization (5mn), this number come back to 5. I can see this in my administration tab, (Statistics)

I call the plugin in my single-custom-type width the function : likebtn_post();

In another page, I display this number width the code :

<?php $post_custom = get_post_custom($post->ID); ?>
<?php echo (int)$post_custom['Likes'][0]; ?>

Have you an idea of the problem ?
Thank you !!

https://wordpress.org/plugins/likebtn-like-button/