Originally Posted by Hughdal
Thanks for the reply's. The answer is US credit card with US address which has worked without a problem for almost a year. As I said it's intermentent, I can download a book OK and then the next 6 attempts are blah blah blah. Have switched over to Kobo till I figure this out.
Some credit card companies block the credit card when they see a lot of small payments. Does your problem happen after buying several ebooks in a row?