new book

i've been trying to buy the new book, Delivered to Eternity by Laura Yirak, and can't get it done. since we don't have a kindle, i downloaded the app 'kindle for pc' last night and it self-registered. but when i tried to buy it, the site said we didn't have any applications to play it on. so i figured it needed time to get its records straight and i tried again this morning, but it's still saying the same thing. i went through all the info the amazon site gives about the kindle for pc, but the information isn't the same as what my app shows. good grief. so i finally sent them an e-mail about it. who knew it would be so hard to spend money?!