BuddyPress.org

Update – the following works:

function venutius_hide_tab() {
	if ( !is_super_admin() ) {
		bp_core_remove_subnav_item( 'settings', 'general' ); 
	}
}
add_action( 'bp_setup_nav', 'venutius_hide_tab', 15 );

However it causes a page not found error when you click on Settings, this is due to the removed nav item being the default tab for the settings link. I’m currently trying to find the right code to reset this default.

So you could add something like the following to your functions or bp-custom.php:

function venutius_hide_tab() {
	if ( !is_super_admin() && !bp_is_my_profile() ) {
		bp_core_remove_subnav_item( 'settings', 'general' ); 
	}
}
add_action( 'bp_setup_nav', 'venutius_hide_tab', 15 );

What plugin did you use to add the option to only display a menu item to logged in users? Seems like that is what is not functioning. hiding the activity link by hiding the menu item does not hide the activity page from non logged in users, if they know the url they will still be able to view it, to prevent that you should explore the security options available to you. There a number of privacy plugins for bp with a range of features, is it only the Activity page you want to hide?

BuddyPress uses the default WordPress login page, there’s a number of customisers for this, for example: https://wordpress.org/plugins/admin-custom-login/

You could use the overload method.
imo, using hooks is easier.

For example, to hide admin users from the members loop, you could put this into bp-custom.php… untested…

function grw_members_loop_ghosts( $retval ) {

    if ( bp_is_members_directory() ) {

        $admins = get_users( array(
				'fields' => 'ID',
				'role'   => 'administrator',
			      ));
        
        $admins = implode(',', $admins );

        $retval['exclude'] = $admins;
    }

    return $retval;
}
add_filter( 'bp_before_has_members_parse_args', 'grw_members_loop_ghosts' );

this code works perfectly to block the admin

// deny access to admins profile. User is redirected to the homepage
function bpfr_hide_admins_profile() {
global $bp;
if(bp_is_profile && $bp->displayed_user->id == 1 && $bp->loggedin_user->id != 1) :
wp_redirect( home_url() );
exit;
endif;
}
add_action( ‘wp’, ‘bpfr_hide_admins_profile’, 1 );

can’t we just change

if(bp_is_profile && $bp->displayed_user->id == 1 && $bp->loggedin_user->id != 1) :
wp_redirect( home_url() );

and make it subscribers in stead of id and loggedin d?

Just to be sure of what your asking, Are you trying to hide these from everyone including the person who owns the profile?

Just in case you dont want to hide them from the profile owner, you should know that any links that are edit, upload rtmedia links only display for the profile owner and no one else and most other things like this are hidden by default from users and friends anyways. Only a profile owner can upload and make changes to his profile or post activity on their profiles.

Also, each member has privacy options in their profile settings. You can set defaults in the dashboard for this as well.

If this is not the case, could you clarify what you hope to achieve?

If you simply wish to remove links for everyone in your site including the profile owner, just use something like this in bp-custom.php file

/* Example to Remove subnav tabs from Group Settings  https://codex.buddypress.org/developer/navigation-api/#examples*/ 	
	function remove_group_manager_subnav_tabs() {   
    // site admin will see all tabs
    if ( ! bp_is_group() || ! ( bp_is_current_action( 'admin' ) && bp_action_variable( 0 ) ) || is_super_admin() ) {
        return;
    }
       // all subnav items are listed here.
       // comment those you want to show
        $hide_tabs = array(             
        //  'group-settings'    => 1,
        //    'delete-group'      => 1,
         //   'group-avatar'      => 1,
        //  'group-invites'     => 1,
         //   'manage-members'    => 1,
        //  'forum'             => 1,
        //  'group-cover-image' => 1
        );
                   
        $parent_nav_slug = bp_get_current_group_slug() . '_manage';
  
    //Remove the nav items
    foreach ( array_keys( $hide_tabs ) as $tab ) {
        bp_core_remove_subnav_item( $parent_nav_slug, $tab, 'groups' );
    }   
}
add_action( 'bp_actions', 'remove_group_manager_subnav_tabs' );

/* Example to Change item names of user’s and group’s nav menus ...
Profile Menu https://codex.buddypress.org/developer/navigation-api/#examples
*/ 
function bpcodex_rename_profile_tabs() {
  
      buddypress()->members->nav->edit_nav( array( 'name' => __( 'My Forums', 'textdomain' ) ), 'forums' );
      buddypress()->members->nav->edit_nav( array( 'name' => __( 'MY Groups', 'textdomain' ) ), 'groups' );
  
}
add_action( 'bp_actions', 'bpcodex_rename_profile_tabs' );

/* Example to Rename Group Menus https://codex.buddypress.org/developer/navigation-api/#examples*/ 	
function bpcodex_rename_group_tabs() {
 
    if ( ! bp_is_group() ) {
        return;
    }
    
    buddypress()->groups->nav->edit_nav( array( 'name' => __( 'Group Discussion', 'buddypress' ) ), 'forum', bp_current_item() );
	buddypress()->groups->nav->edit_nav( array( 'name' => __( 'Group Members', 'buddypress' ) ), 'members', bp_current_item() );
	buddypress()->groups->nav->edit_nav( array( 'name' => __( 'Group Activity', 'buddypress' ) ), 'home', bp_current_item() );
}
add_action( 'bp_actions', 'bpcodex_rename_group_tabs' );	
	

/* Example to Remove subnav tabs from Group Settings  https://codex.buddypress.org/developer/navigation-api/#examples*/ 	
	function bpcodex_remove_group_manager_subnav_tabs() {   
    // site admin will see all tabs
    if ( ! bp_is_group() || ! ( bp_is_current_action( 'admin' ) && bp_action_variable( 0 ) ) || is_super_admin() ) {
        return;
    }
       // all subnav items are listed here.
       // comment those you want to show
        $hide_tabs = array(             
        //  'group-settings'    => 1,
        //    'delete-group'      => 1,
         //   'group-avatar'      => 1,
        //  'group-invites'     => 1,
         //   'manage-members'    => 1,
        //  'forum'             => 1,
        //  'group-cover-image' => 1
        );
                   
        $parent_nav_slug = bp_get_current_group_slug() . '_manage';
  
    //Remove the nav items
    foreach ( array_keys( $hide_tabs ) as $tab ) {
        bp_core_remove_subnav_item( $parent_nav_slug, $tab, 'groups' );
    }   
}
add_action( 'bp_actions', 'bpcodex_remove_group_manager_subnav_tabs' );