A few days ago, my Pocketbook started having database problems. It's not updating the "New Books" section - it shows books uploaded on Jan 22 but nothing after that. When I scroll through the folders by filenames, new books don't show authors, just the actual filename. And I can select them and read them, but they don't show up in Recent Books; if I close out of the book, I have to navigate to it in the folder structure.
I know I uploaded a book that caused problems, but I deleted it, and it's still not working.
Problem book: I downloaded a fanfic series from AO3, used EpubMerge in Calibre to make them into one book. I have no idea what went wrong, but it gave Sigil weird error messages and my Pocketbook couldn't open it. I tried re-converting it to epub in Calibre, and Sigil stopped erroring but the PB still couldn't open it. (Did a couple of other workarounds; got it to where I could read it, but the database still wasn't seeing the title/author, just the filename.)
The most recent solution I've seen for a similar problem was from
2014 with the Touch Lux - but it involves "advanced settings" on the device, and the HD3 doesn't have that.
Anyone know if there's a way to repair the database & get it to recognize new books without wiping everything and starting over? I'd like to not lose my history of everything I've read or partially read.
Other details: I've never used the internet with this ereader; it's all been sideloaded by USB.
(Also recently it's started trying to sync a backup via Dropbox when plugged in and I'd like that to stop. I can manually stop it each time but I can't find a setting to turn it off. I don't know if that's related to the not-seeing-books problem.)
ETA: Software version U632.5.19.713
Release date: 21090116_162239
Localization: WW
(I have not updated anything since I bought it.)