Facebook API “This app is in development mode”

• What does "development mode" mean for a facebook app? I find no exact explanation of what I can and can't do while in development mode and what's the relation with the "Not available to all users because your app is not live".

  Some people also refer to it as "Sandbox mode" so I have a lot of confusion between "development mode", "sandbox mode", "live vs not available to general public"
• Development mode is for testing
• Go to https://developers.facebook.com/apps, then App Revie -> Select No for Your app is in development and unavailable to the public
• Go to Roles -> Testers, enter the Facebook user Id of the users you want to enable testing

2down vote

Follow these basic steps to fix this problem, Step 1: Go to Dashboard, Step 2: Go to "App Review" tab, Step 3: Enable the "Make test public?" option, Like Below image, shareimprove this answer