More "enshittification". This time from Amazon. Amazon is pulling a Google, killing off popular services. Evidently, I have until 25th February to download my 708 books that I have purchased from them. After the 25th you can no longer download YOUR books for backup or transfer via USB
Good job I did this 2 years ago eh? Buy the books from elsewhere.
https://goodereader.com/blog/kindle/amazon-is-not-to-be-trusted-anymore-with-their-kindle-e-reader