retrieving data from wpdatatable

I’m trying to retrieve data from a simple WP data table I created. The table definitely exists and the short code is [wpdatatable id=1] but when trying the code below i continue to see “no data is found”

I think I’m using the wrong table name in the code below but not sure. Any help would be much appreciated.

<?php
/*
Plugin Name: Table Test Plugin
Description: A simple plugin to test fetching data from a wpDataTables table.
*/

// Shortcode for displaying table data
function table_test_display_shortcode() {
    ob_start();

    // I thought '1' is  the right  ID but not sure
    $table_id = 1;

    // Load wpDataTables plugin class
    if (class_exists('WPDataTable')) {
        // Get the wpDataTables object
        $wpdt = new WPDataTable($table_id);

        // Get the table data
        $table_data = $wpdt->get_data();

        if ($table_data) {
            echo '<table>';
            echo '<tr>';
            foreach ($table_data[0] as $column_name => $value) {
                echo '<th>' . $column_name . '</th>';
            }
            echo '</tr>';

            foreach ($table_data as $row) {
                echo '<tr>';
                foreach ($row as $value) {
                    echo '<td>' . $value . '</td>';
                }
                echo '</tr>';
            }
            echo '</table>';
        } else {
            echo 'No data found.';
        }
    } else {
        echo 'wpDataTables plugin is not activated.';
    }

    return ob_get_clean();
}
add_shortcode('table_test_display', 'table_test_display_shortcode');