XLS Padlock 2.6 will come with a new activation kit with WooCommerce integration. Here is a screenshot:
As you can see, system IDs are stored in each order in additional fields. You can then decide to allow more activations, deactivate existing copies and see how many copies have been activated. Finally, it's possible to block a user if he asks for a refund for instance.
A tutorial will also be published in addition to a working online WooCommerce shop demo.