WooCommerce Kit: log of license check at every startup

Dear sirs,
in the woocommerce kit is there any log where the queries to the server are stored every time a user starts the application and the license validity is checked?

Thanks
Marco

Is there anyone that can help me?

No, we don’t store any log, but you could easily modify the MainController.php to add log entries for instance with error_log() https://www.php.net/manual/en/function.error-log.php

I`d also be interested in activation and validation logs. Some example with modified MainController.php file would be really useful.

Sure, near line 393 in MainController.php file, just add:
error_log("Customer $customer_email validated $product_id successfully - WooCommerce order ID $customer_order_id");
Thus, you’ll get a track of each validation performed.