Content Unavailable Due to Privacy Settings or Deletion
Users often see a message indicating that content isn’t available. This typically occurs when the owner has shared the content with a limited audience, changed privacy settings, or deleted the post.
Such restrictions prevent others from viewing the content. Facebook, for example, states that this message appears when the owner limits who can see the post or has removed it altogether.
There is no additional information available about the specific content in question, as these restrictions are set by the content owner.
Source: Original Article