Some books with Amazon's DRM have a limit on the number of devices it can be used with. Sometimes the limit is very low, such as only 1 or 2 devices. This makes

Some books with Amazon's DRM have a limit on the number of devices it can be used with. Sometimes the limit is very low, such as only 1 or 2 devices. This makes it difficult to re-download some books. I've run into this, especially with science or reference books. And was impossible to fix on my own because the original download was to an old Kindle that's now sitting in a box somewhere in the garage, or to the Kindle app on an old phone that's no longer in my possession. I suppose that could be fixed with a call to Amazon's customer service who could probably de-register those old devices in their system. But who wants to deal with that? Every book I've ever bought from Amazon has been cracked and backed up. I had been willing to put up with the DRM. Didn't want to go to the hassle of re-downloading and processing hundreds of books. But when I ran into the "This book has reached its license limit and cannot be downloaded", that was the last straw.