Originally Posted by PeterT
Remember though that you cannot deregister a device and if you preregister a device that counts as another registration.
The last few times I have done a reset I just saved and restored the Adobe directory (I'm not at my PC right now but it's the .adobe something directory at the root of the Kobo when attached to your PC).
I think that's what I've done... registered too many devices. When I was having problems I de-authorized and authorized my computer and my ebook several times. Is there a way to reset the number of authorizations/registrations?