What kind of message are they showing?
Could you please send them to support@likebtn.com
VirusTotal was taking the following piece of code for a threat:
<?php _e('Enable synchronization of likes from LikeBtn.com system into your database to:', LIKEBTN_I18N_DOMAIN); ?>
The issue has been fixed. Download the updated plugin from https://downloads.wordpress.org/plugin/likebtn-like-button.2.1.9.zip extract to /wp-content/plugins/likebtn-like-button/ replacing existing files.
Wow….thanks for the quick solution. Really happy to your this plugin.