there seems to be an error on mobile devices, if you want to add anything, using the plus-sign in easy social mobile menu. You can test it on your demo site: https://easysocial.stackideas.com/events
if you try to add for example an event on a mobile phone. Then you click the plus-sign in top mobile menu and at bottom of page there comes an additionally window just with headline, but it does not show you the adding something form, as you can see in the attached screenshot.
Thank you and best regards