Probably already known issue.. but since the last EasySocial update if you edit an event and save it (without changing the title) than a '2' is added to the end of the title. That then requires users (if they notice!) to edit again to remove the '2'
Looks like we introduced another bug when we were addressing issues with recurring events having duplicate titles. I have applied this fix on your site and this is also fixed internally as well.