And you can dump such a file into a spreadsheet for editing. But, as the same page allows importing csv files, I'm guessing that's what will be exported. I have no idea what it produces - I just did it and it said it would take a while if I have a big library. One is import and export and if you go there, at the very top is a button that says 'export'. If you're on your 'My books' page, go to the bottom of the list of choices along the left side. I did also find, on GR, an 'export' button. I guess you then use the print function via your browser. But you can still (I think) import all your purchased kindle books, at least - not sure of borrows - and when you do that you can look at them and sort in various ways.* Additionally, there is a 'print' feature - but when I clicked it, all it did is reformat the page - it didn't pop up with my printer information.

You can, of course, use Good Reads, but it works more like a data base and less like a spreadsheet. I honestly have no idea how it works because I don't use it and never have, but I suspect whatever triggered the problem before has been fixed. Note that Calibre has most likely been updated, probably multiple times, since you last tried it. As far as I know, that's not something that is easily done, sorry. so you can more or less catalog your own library. But it sounds like you're more interested in getting the data - title, author, etc. Via the Manage Devices and Content page it is a lot easier now to download a bunch of stuff at once to your kindle.

Export calibre library to excel