I see this issue has been raised in the past. I recently rebooted my Kobo ereader. Now, when I connect to ADE the option to authorize device is greyed out. This might be linked to the maximum number of devices (although I am not getting that error message). The people on the chat suggested Something in the regedit file but the instructions they gave didn't work. After that they refused to help, referring me to the forum. Can anyone help?
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