hey Haki,
Yes, because now we pass event avatar to Facebook to crawl the image data from the event page.
Then I noticed our event avatar size is too small and Facebook debugger tool result mentioned that that avatar size must over 200px.
So I have updated to pass event cover to Facebook instead of event avatar.
Can you try download my fix file and replace into following file location and see how it goes?
JoomlaFolder\components\com_easysocial\views\events\view.html.php
After you replace it, you have to copy your event page URL to
facebook debugger tool page to clear the cache data, so that Facebook can re-crawl again your correct data from the event page.
If the issue still persists, can you start a new thread regarding this?