I disabled WP-Cron with functions.php and created cronjobs at the hosting panel. No problems at all.
I did the same but the problem remained. In my case, a post was reshared over and over again, every few minutes and would not stop sharing until I manually stopped it.
Also, you need to remember that if you disable WP-Cron with functions.php, you will badly affect other website functions that rely on WP-Cron.
Overall, this is not a solution. The plugin author should make sure that none of this is needed. We need to remember that not all wordpress users have the skills to do what is asked by the plugin. And, more to the point, the author does not really seem to care as he does not even reply to his own forum posts or even any submitted tickets. I am currently searching for a different plugin.
