HPOS compatibility

Guys you declared compatibility with HPOS in v.1.3 but you forgot to tell about that to WooCommerce – it still thinks that your plugin is incompatible. Add this code to your main file:

add_action( 'before_woocommerce_init', function() {
        if ( class_exists( \Automattic\WooCommerce\Utilities\FeaturesUtil::class ) ) {
                \Automattic\WooCommerce\Utilities\FeaturesUtil::declare_compatibility( 'custom_order_tables', __FILE__, true );
        }
} );