[Justy]

Calibre is no longer using the metadata plugboard to rename the title when sending to my Kobo Aura 2. I have updated to calibre 3.19, I believe it was still working with calibre 3.16. Only the original title and author fields are sent now, not the plugboard combined title field.

I have the following options set:
Send book to device:
Books/{tags}/{authors}_{series}{series_index:0>2s||_}{title}

metadata plugboards:
KOBOTOUCH
epub – {series}{series_index:0>3s||_}{title} = title and title sort

KOBO
epub – {series}{series_index:0>3s||_}{title} = title

I thought it might be a database error, so I first logged out and then in again to my kobo account, which got rid of the "can't communicate with device" pp-up, but didn't correct the titles. Then did a factory reset on the device and made sure I was using the most recent Calibre, but those changes didn't correct the issue either. The only changes I made that may have impacted the function was to update Calibre to a newer version and I hit "Save" instead of "Cancel" when confirming my 'Send to Device" settings.

Any suggestions to get Calibre talking to the Kobo again would be greatly appreciated!