How to make a Facebook post on behalf of the community using the API?

Question

Facebook

Can you please tell me how to get the necessary rights for the application and publish to the Facebook page using the API on behalf of the community? Already in my opinion I tried everything, but in most cases I get an exception that there are not enough rights. In the community, I am naturally an administrator.
When installing the application, I request the rights "publish_actions" in scopes. But when adding an application, the following inscription is displayed, as in the picture:

Who faced a similar problem, tell me how to solve it? Google gives out mostly outdated information, before updating the security policy.

Answer 1

$params = array(
    "scope" => 'read_stream,publish_stream,publish_actions,offline_access'
    
  );
$loginUrl = $helper->getLoginUrl($params);	
echo '<a href="' . $loginUrl . '">Login with Facebook</a>';