See my answer in a similar thread about sending articles to Pocketbooks:
https://www.mobileread.com/forums/sh...09&postcount=3
I'm not entirely sure but at the moment it is not possible to export notes from the Pocketbook devices using the built-in reader. You can do so, however, if you use Coolreader or KoReader, which I prefer over the built-in reader. You won't have TTS functionality in those external readers, though.