I had to do a factory reset on my Kobo Touch due to some other issues and had problems with setting up the wifi connection. My wifi is hidden so I manually added it but it would connect and say "successful" but then just hang on that screen and wouldn't connect to the internet.
A phone call to the Kobo help line got me to do a pin reset on the back of the KT. Once the KT restarted it connected automatically to my network.
Just wanted to share in case it will help someone else.