I have been primarily reading eBooks using Play Books on my Android tablet, however today I tried out the Amazon Kindle app and tried to download some of their free eBooks to test it out and compare the two applications.
However, whenever I try and get an eBook through the Kindle app I see "Available for download now" in the main list but when I tap on a title I get the message "This title is not currently available for purchase" as follows;
This currently seems to be affecting everything that I tap on in the Kindle app. Have I done something wrong? How can I "purchase" a free eBook through the Kindle app on Android?