[marst]

Originally Posted by JSWolf

I'd not be thrilled or even pleased if I knew I was missing out on features that I could easily get if I used Calibre to manage my eBooks instead of ADE.

The device's no longer being able to sync even when it's connected to the PC and the Kobo program for Windows is running, suggests to me that something's gone very wrong with it. There's a solution I haven't tried yet—log out of the account and log back in. It might at least enable me to use the "repair your account" command on the device. I can do that from the Kobo program for Windows, but "repair account" doesn't work on the device itself any more. The three previous times, log-out/log-back-in erased all side-loaded books. (Now I have them backed up in a single location—quick restore, hopefully.)