Already have. I'm waiting for a response. I've been having, all of a sudden, multiple problems, which I think are related: the cookie problem, which resulted in having to re-register, which in turn caused the can't-open-purchased-ebooks problem, which has now caused a "bad device key" problem; and a problem opening email attachments. I can't. Open email attachments, that is, of any kind, no matter the browser.