Thank you for the clarification; I was not sure as this thread is in the AmpliTube sub-forum. I've changed the thread title.
Having said that, I do not know what "Limit 1 free bonus content per customer" means either
. As this is primarily a user to user forum, the best thing to do is contact Sales Support, here:
https://www.ikmultimedia.com/contact-us/ContactIKForm.php for a definitive answer. And, to help out others, please let us know the answer.