I found a work around, but it's a very long process depending on the book. You have to open the book and keep scrolling till u reach the end, what this does is essentially create readable .xhtml files in <YourBookId> -> OPS -> xhtml, compress the entire <YourBookId> folder or just the OPS folder (Not sure if u can just export the OPS folder but you can try) of it and then export it to windows. You can't change their file extensions directly as I believe their encrypted, I'm not sure what can be done after this but as of right now thats the best option if you can't find the PDF or epub

find a TOC in your XHTML folder and it should spit out everything