I have a message saying that the offer is not available in my country, why?

We are really sorry but the free books offer you received is restricted to specific territories. . We only distribute the books and the publisher decides on the terms and conditions of the offer. We invite you to contact them directly to ask about the reason for this, or to get access to another offer available in your country. We do have around 4,000 classic title available for free here: https://glose.com/bookstore/classics-ed-us