I had this SAMEEEEE Issue!!!
I contacted Kobo support and this is the reply they finally gave me... worked like a charm!!!
Hi there
Thanks for your response.
Please perform a full un-install and re-install of the desktop app using the following steps:
WINDOWS
Close the Kobo desktop application and uninstall it.
Press Windows button + R, type regedit and press enter
In the Registry Editor window double click HKEY_CURRENT_USER
Double click on Software
Locate Folder Kobo, right click on it and select Delete
If prompted click "Yes"
Uninstall the Kobo app.
Press Windows button + E and browse to C:\Program files\ , find Kobo folder and delete it. (if you do not see Kobo folder, move to next step)
Then browse to C:\Program files (x86)\ , find the Kobo folder and delete it (If you do not see Program files (x86) folder or Kobo folder, move to next step)
Browse to C:\Users\<<USER NAME>>
Press and hold the ALT button and press T, while still holding the ALT button press O.
Click on the "View" tab at the top.
Click on "Show hidden files, folders, and drives" and click OK.
You will now see folder called AppData, open it and double click on "Local".
Find folder "Kobo" and delete it. (If you do not see Kobo folder, move to next step.)
Reboot the computer
Reinstall Kobo desktop app from
http://www.kobo.com/desktop
Start the Kobo desktop application
MAC
Sign out of Kobo app and uninstall it
Open Finder
Press command + shift + G
Type ~/Library/Preferences press enter (Case sensitive)
Find all files that start with com.kobo and delete them (should be 2 files)
Press command + shift + G and type ~/Library/Application Support (Case sensitive)
Delete Kobo folder
Download latest version of Kobo app from http://www.kobobooks.com/desktop
Install and open Kobo app and sing in.
NOW RESET THE DEVICE
The next step requires you to factory reset the device. To do this, please follow the steps below:
1. Turn on your eReader.
2. Press the Menu button.
3. Press the center of the Navigation pad.
4. Select Settings.
5. Press the center of the Navigation pad.
6. Select Advanced.
7. Press the center of the Navigation pad.
8. Select Reset Device Now.
9. Press the center of the Navigation pad.
10. Once the eReader is powered up again, set the date and time.
We would like to apologize for the inconvenience of this again. If these steps did not resolve the issue you were experiencing, please let us know.
Thank you.
Sincerely,
The Kobo Team
Let me know if this works for you guys!!!!