We're really sorry to hear you're having trouble making a purchase. Usually the process just works, but occasionally things do go wrong.

Sometimes the problem is not under our control, but even in those cases, we have had experience helping many people over the years, and so we've prepared this article to provide you with some guidance, to help you resolve your issue as quickly and easily as possible, even if it's not something we can fix ourselves.

Below is a list of detailed articles from our Help Center, with explanations of some problems we have heard about before, and what you can do to solve them.

If you don't see your problem in this list, please search this Help Center for more articles. You will almost certainly find something relevant here, and get an instant answer to your problem, because whenever we learn about a problem, we try to share the solution here.

I'm trying to buy a book and I see "This transaction cannot be processed."


I tried to buy a book and was taken to a screen that said you would send me a "token" by email. Why is this happening, and what should I do next?


I'm trying to make a purchase and I am seeing the message "Transaction refused due to risk model." What can I do?


I am going to need to add company information to my purchase receipt. How can I do that?


Leanpub is saying my VAT number is invalid. Why?


If I can't find an answer to my question in this Help Center, what should I do?


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