I have resolved this issue by editing the plugin.class.php
function render_convos_in_orders() {
// add_meta_box( 'orders_convo', 'Conversation',
// array($this,'render_convo_admin'),
// 'shop_order', 'normal', 'default');
add_meta_box( 'orders_convo', 'Conversation',
array($this,'render_convo_admin'),
array( 'wc_booking' ), 'normal', 'default');
}
add_action( 'admin_init', array($this, 'render_convos_in_orders') );
Is there any way for me to move this into a child theme so that I prevent this from being overridden when I apply updates?