OK actually I see in the changlog that in version 6.6.4 you added HPOS compatibility so it just appears the plugin needs to declare that it works with HPOS so it can be activated.
https://github.com/woocommerce/woocommerce/wiki/High-Performance-Order-Storage-Upgrade-Recipe-Book#declaring-extension-incompatibility
I went ahead and editted the plugin file:
/wp-content/plugins/woo-product-bundle/wpc-product-bundles.php
after line 28 that has this:
include 'includes/dashboard/wpc-dashboard.php';
I added this code:
add_action( 'before_woocommerce_init', 'woosb_declare_hpos_compatibility' );
function woosb_declare_hpos_compatibility() {
if ( class_exists( \Automattic\WooCommerce\Utilities\FeaturesUtil::class ) ) {
\Automattic\WooCommerce\Utilities\FeaturesUtil::declare_compatibility( 'custom_order_tables', FILE, true );
}
}
Now the plugin works with HPOS! Can you please update the main plugin with this patch please!