/**
     * account connectivity field
     */
    public static function _render_account_connectivity_field()
    {
        // Check the last request for connectivity
        $request = PushUp_Notifications_JSON_API::_get_last_request();
        $code = wp_remote_retrieve_response_code($request);
        $message = wp_remote_retrieve_response_message($request);
        // Set some default variable data
        $connection_class = $authenticate_class = 'status-error';
        $connection_status = sprintf(__('Error: %d - The PushUp API could not be reached.', 'pushup'), $code);
        $authenticate_status = __('Your PushUp username and/or API key are invalid.', 'pushup');
        // Check the connection and provide some feedback
        if (200 === $code && 'OK' === $message) {
            $connection_class = 'status-success';
            $connection_status = __('The PushUp API was contacted successfully.', 'pushup');
        }
        // Check whether the users username and API key are valid
        if (PushUp_Notifications_Authentication::is_authenticated()) {
            $authenticate_class = 'status-success';
            $authenticate_status = __('Your PushUp username and API key are valid.', 'pushup');
            if (PushUp_Notifications_JSON_API::is_domain_enabled()) {
                $domain_class = 'status-success';
                $domain_status = __('PushUp has been provisioned for this domain.', 'pushup');
            } else {
                $domain_class = 'status-error';
                $domain_status = __('PushUp has not been provisioned for this domain.', 'pushup');
            }
        }
        ?>

		<p class="pushup-connection-status <?php 
        echo esc_attr($connection_class);
        ?>
"><?php 
        echo esc_html($connection_status);
        ?>
</p>

		<?php 
        if (self::get_username() || self::get_api_key()) {
            ?>
			<p class="pushup-authentication-status <?php 
            echo esc_attr($authenticate_class);
            ?>
"><?php 
            echo esc_html($authenticate_status);
            ?>
</p>
		<?php 
        }
        ?>

		<?php 
        if (isset($domain_status) && isset($domain_class)) {
            ?>
			<p class="pushup-domain-status <?php 
            echo esc_attr($domain_class);
            ?>
"><?php 
            echo esc_html($domain_status);
            ?>
</p>
		<?php 
        }
        ?>

	<?php 
    }