Skippy Gravatars for Subscribers

I have this plugin that is great!
But dont appears the “Gravatar” tab in my Subscribers. Is there any fix for this? Can someone help me? ??

I tryed to contact the plugin author mas I fond this in the page:
“Please note that I do not provide support for my plugins at this time. Please direct all your plugin support questions to the WordPress Support Forum. Any plugin support requests I receive by email or the comment form below will be ignored.”