also if you want to export your highlights into a word doc, I think the site is the easiest way to do it: https://mollykannn.github.io/kobo-book-exporter/
edit: it looks like the original website i linked doesnt work anymore but this one looks like the exact same one but came out earlier than the one i was using and doesnt ask for donations
Edit again: actually this one doesn't have the export option but you can copy paste
Did you eject your device before unplugging?
It also sometimes needs to restart before the book shows up