Hello Kiran, We apologize for the inconvenience, we see this is a free item you can add to your cart and proceed with the checkout without being charged. If you are not receiving our emails for the free book of the month, you can check if you are registered to get our offers by email by going to your profile and checking your email lists. If you still have questions, you can send us an email at cs@logos.com and we will gladly continue assisting you :)