I am really sorry for the delay of this reply as it is a weekend for us here. I have checked your site and it seems like all the e-mails are in the e-mail queue and it isn't being sent. It is most likely because you have not setup the cronjobs yet. If you have not, you would need to setup a cronjob using either one of the guide at https://stackideas.com/docs/easysocial/administrators/cronjobs