If you click the Facebook Share icon under a Service or Event and you encounter the message: "User opted out of platform: The action attempted is disallowed, because the user has opted out of Facebook platform" it's due to a setting which you'll have switched off on your own Facebook profile.
Instructions on how to switch on this setting are below, however, if you do not wish to switch on this setting, you can share a Service or Event by opening the Service or Event, copying the website address for that Service or Event and pasting it into a post of Facebook manually.
How to switch on the Facebook setting:
Visit: https://www.facebook.com/settings?tab=applications (having logged into your Facebook profile) and click Edit (marked on the image below) in the grey boxed which says:
Apps, websites and games
This setting controls your ability to interact with apps, websites and games, both on and off Facebook.
Then click Turn On.
Once you've done this you'll be able to share a Service or Event using the Facebook Share icon under the Service or Event on AChurchNearYou.com