Hi Frank,
There was an issue with my fix for Nouveau. I missed to check for logged in user.

Here it is updated.

/**
 * Fix for nouveau.
 */
add_filter( 'bp_nouveau_get_members_buttons', function ( $buttons ) {
	if ( is_user_logged_in() || ! isset( $buttons['private_message'] ) ) {
		return $buttons;
	}

	$buttons['private_message']['button_attr']['href'] = wp_login_url( site_url( '?message-redirect=' . bp_displayed_user_id() ) );

	return $buttons;
} );

/**
 * Redirect to the send message when the user logs in
 **/
function buddydev_redirect_to_send_message_on_login() {

//make sure it is our url set in previous step
	if ( ! is_user_logged_in() || empty( $_GET['message-redirect'] ) ) {
		return;
	}

//redirect to PM
	$user_id = absint( $_GET['message-redirect'] );
//let us make sure that user exists
	$user = get_user_by( 'id', $user_id );
//can not PM to invalid user
//also you should not send message to yourself
	if ( ! $user || $user->ID == bp_loggedin_user_id() ) {
		return;
	}

	$url = bp_loggedin_user_domain() . bp_get_messages_slug() . '/compose/?r=' . $user->user_login;

	bp_core_redirect( $url );
}

add_action( 'bp_template_redirect', 'buddydev_redirect_to_send_message_on_login' );

Regards
Brajesh

You are welcome.

Hi Jan,
Thank you for the question.

Currently, It does not provide the option for showing chart.

Since the data is present in database tables, you might hire a developer to develop this as a custom solution.

Regards
Brajesh

Hi Plutus,
That is the correct way to override.

If it is not working, Please contact the theme author and seek their advice. They may be able to help better.

Regards
Brajesh

Hi Frank,
Thank you for posting here.

There is a bug in BP Nouveau template that cases it.

I have updated the code with the fix. Please use the following code

function buddydev_filter_private_message_button_args( $args ) {

	//if the user is logged in, we don't need to do anything
	//Also, I am only handling it for profile buttons here
	if ( is_user_logged_in() || ! bp_is_user() ) {
		return $args;
	}

	$user_id = bp_displayed_user_id();

	$args['must_be_logged_in'] = false; //show for non logged in too
	//and redirect to our custom url containing the user id
	$args['link_href'] = wp_login_url( site_url( '?message-redirect=' . $user_id ) );

	return $args;
}

add_filter( 'bp_get_send_message_button_args', 'buddydev_filter_private_message_button_args' );

/**
 * Fix for nouveau.
 */
add_filter( 'bp_nouveau_get_members_buttons', function ( $buttons ) {
	if ( ! isset( $buttons['private_message'] ) ) {
		return $buttons;
	}

	$buttons['private_message']['button_attr']['href'] = wp_login_url( site_url( '?message-redirect=' . bp_displayed_user_id() ) );

	return $buttons;
} );

/**
 * Redirect to the send message when the user logs in
 **/
function buddydev_redirect_to_send_message_on_login() {

//make sure it is our url set in previous step
	if ( ! is_user_logged_in() || empty( $_GET['message-redirect'] ) ) {
		return;
	}

//redirect to PM
	$user_id = absint( $_GET['message-redirect'] );
//let us make sure that user exists
	$user = get_user_by( 'id', $user_id );
//can not PM to invalid user
//also you should not send message to yourself
	if ( ! $user || $user->ID == bp_loggedin_user_id() ) {
		return;
	}

	$url = bp_loggedin_user_domain() . bp_get_messages_slug() . '/compose/?r=' . $user->user_login;

	bp_core_redirect( $url );
}

add_action( 'bp_template_redirect', 'buddydev_redirect_to_send_message_on_login' );

Regards
Brajesh