Good so this shows no issues with the database. The iobky reason I asked about koreader is that it can cause issues with books being added to the Kobo database, and the database on the Kobo is used to populate the books on device view.
The lack of importing content message is significant though.
Is the date / time set correctly on your Kobo?
You are sending ePub format I presume.
You are cleanly ejecting the device from the PC?
Have you tried rebooting your Kobo?
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