Comment by NoGravitas

> And the one thing that I want it to do, it doesn't. Not reliable or not at all. > I want it to give me access to the ebooks I buy online.

There are perfectly good Calibre extensions that do this. Given the legalities, it is not at all surprising that those extensions are not written or maintained by the main Calibre developer, and not included with Calibre. But they are easy to find and install.