I have an iPad that can access both my home and work computers just fine.
Using my home computer running the Windows client 18.104.22.168 I can not successfully log into Internet discovery.
After entering the correct gmail account and password and hitting the Login button it returns to it's prior state.... does not say it is logged in does not say that the action failed.
When I click the OK button I get a pop up message that states "If you want to enable internet discovery feature please login to your Google account. Thank you."
That as far as I can get.