Hi Sheldon,
After you enter the app id, you need to save first then connect. Or you can follow this steps to troubleshoot your issue:
1. Edit your Facebook application.
2. Check Site URL, App Domain make sure they are the same as your site domain (
http://www.yoursite.com and
http://yoursite.com make a big difference)
3. Reset the App Secret
4. Go to the EasyBlog -> Autoposting -> Advanced Settings page and revoke the access.
5. Go though the EasyBlog -> Autoposting -> Step by step guide and re-enter the new key and reauthenticate the Facebook access.
We can configure it for you if you can provide us your backend and Facebook access.
Hope this helps.
By the way, please remember to assign your domain to your license to obtain for support in the future. You can do so by accessing your license area at
http://stackideas.com/dashboard