[hypnoscient]

This seems to work, wondering if there is a better way, to not display it at all instead of using a CSS display:none.

Comments welcome :

function action_bp_before_activity_entry(  ) { 
    global $activities_template;
    
$postid = url_to_postid( $activities_template->activity->primary_link ); 
    echo do_shortcode('
        [mbr_is_allowed_access post_id='.$postid.']
        [ELSE_is_allowed_access]
            <div style="display:none">
        [/mbr_is_allowed_access]
        ');
}; 
add_action( 'bp_before_activity_entry', 'action_bp_before_activity_entry', 10, 0 ); 

function action_bp_after_activity_entry(  ) { 
    global $activities_template;
    
    $postid = url_to_postid( $activities_template->activity->primary_link ); 
    echo do_shortcode('
        [mbr_is_allowed_access post_id='.$postid.']
        </div>
        [ELSE_is_allowed_access]
            </div>
        [/mbr_is_allowed_access]
        ');
}; 
add_action( 'bp_after_activity_entry', 'action_bp_before_activity_entry', 10, 0 );