Yes, Facebook already updated their API recently which caused this and the latest version of Easyblog already compatible with the Facebook latest API, is it possible for you to update your Easyblog to latest version and see how it goes?

After you updated, you have to do following steps in order to make that autopost work.

1. Add these Oauth Redirect URI http://take.ms/FJpof into your Facebook app http://take.ms/GFuwJ

2. Then click sign in via Facebook button from your backend > Easyblog > autopost > facebook

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