Conflicts with Subscriptions Plugin – Includes TEMP Fix

Both Subscriptions and your plugin use this hook to insert code into the Product Data metabox:
woocommerce_product_options_reviews

When Subscriptions is turned on, it takes over this hook, so your plugin will ONLY work on Subscription products.

I’ve fixed this temporarily by creating a new hook called:
do_action( 'woocommerce_product_options_tracking' ); // AA-CUSTOM

I inserted this in the class-wc-meta-box-product-data.php, around line 740, just after the original hook and closing DIV (since your plugin inserts its own product_options DIV), like this:

do_action( 'woocommerce_product_options_reviews' );

				echo '</div>';	

					do_action( 'woocommerce_product_options_tracking' ); // AA-CUSTOM

I then changed line 21 in your plugin to:

add_action( 'woocommerce_product_options_tracking', array($this, 'product_options') ); // AA-CUSTOM

However, this is only a temporary fix as it will break with any WooCommerce update. Please find another way to hook in the individual product tracking code!

Thank you!

https://wordpress.org/plugins/woocommerce-conversion-tracking/