“If so make sure that all other social plugin on your website use the same application ID, and / or set load the Facebook API Synchronously in the plugin’s settings.”
If you can configure these plugins, make sure to set the api key to the same key of the application you just created. Facebook will initialize the page with the first API key it encounters, the otherones will be ignored, so this is important.
In addition, i checked your website again and got the same error
Can't Load URL: The domain of this URL isn't included in the app's domains. To be able to load this URL, add all domains and subdomains of your app to the App Domains field in your app settings.
This error should be resolved if:
– The proper api key is loaded (so the other social plugin are also configured correctly)
– The siteurl and the domain url are set properly (DO NOT include the www. part in this case)
Best regards